Well, stabilizers are the most over engineered gadget you can hang on your bow, FWIW. On average, you can't pay more for less. I have several on my 8 bows.

The bow needs to balance when carrying and shooting.
Guessing a hunting stabilizer, it comes down to length and weight. Shorter requires heavier to get the same balance.
Get one that allows you to add or reduce weight. My hunting bows all work fine with anything from 6"-10", longer than that, and it becomes less than handy with every inch added.

Not that it's what you want, but Doinker and Bee Stinger are my personal favorites. Paid too much for all of 'em. Not a one will land an arrow where I want it if I don't do my part.

 

No one can tell you what lengths and weights you may need, the best you can hope for is an idea of what we use, which may and may not work with your bow and your accessories and your form for your intended use... What I like may be very different that what you want or like, and worse what I like on one of my bows doesn't work at all on another of my bows... It's truly a"gotta try it to know" situation.

There[s a YouTube called "A Thing A Week" by
GRIV [George
Ryals IV] about stabilizers; Google should find it... It's a starting point.

 

Stab lengths and weight is 110% preference. I would like to see 2 archers that run the exact same length and weight combo. . Weights aren't cheap but if you get like 15-20 ounces then just play around with different combos and see what feels best. Same with stab length, hunting bows I would say start with a 10-12" front and maybe 8-10" back bar and tweak it from there.

 

Depending on what you are using the bow for I'd go with 10 - 12 inches for hunting and 28 to 30 inches for target shooting. I also like having a v-bar stabilizer to balance the bow. Using a variety of weights you can make your bow do everything from breaking left on a good shot, braking straight in front of you and tilting down or even staying perfect in your hands. All of these forms are determined by the weight you are using.

None is the best, you just have to try them all and see what you like.

 

Here's another good article by Levi Morgan.
Achieving Perfect Bow Balance

Maybe you are new to archery and trying to learn everything you can. Maybe, however, you have been a successful archer for years and are simply reading this because you are addicted and can’t get enough. Either way, we all want to be better shots, and if you say you don’t, I’d say you’re not a passionate archer/hunter.

There are many things that make up a great archer, but no one thing is more important than having a perfectly balanced bow. The overall goal of finding perfect balance is to be able to draw the bow with your eyes closed, settle in and open your eyes to a perfectly level bubble. This takes away human influence or torque that is necessary to level your bow otherwise. Proper balance will better your aim in all areas. Better aiming then leads to improvements in every aspect of your shot and can even cure most forms of target panic.

To achieve perfect balance, you will need a front stabilizer bar (I’d recommend at least 10 inches), a V-bar bracket that will allow you to adjust side to side and up and down, and a rear stabilizer bar that’s at least 8 inches. In addition, you will want a few weights to play around with.

First, you will need to put the stabilizers on and level the bow from side to side. I would recommend trying 4-5 ounces of weight on the front bar and 10-15 ounces on the back bar. You can fine-tune the weights from here, but this is a good ratio to start with.

Next, draw the bow with your eyes closed, anchor with a relaxed grip and open your eyes. If the bubble on your sight is not level, then adjust the rear stabilizer accordingly until you can repeat this process and your bow is perfectly level from side to side.

Leveling your bow front to back is a little different because you will adjust by adding or removing weights rather than adjusting the bars from side to side. To level your bow front to back, come to full draw aiming at a horizontal line. If your pin wants to dip or bounce below the line then add weight to the back bar or take the weight off the front. If your pin bounces above the line, do the opposite. After this step is complete, your bow should be very close to balanced. While you probably won’t be aiming perfectly still, your aiming pattern should be centered on that horizontal line, not bobbing up or down.

Obviously, we all want to be the best archer we can be. Balancing your bow properly will help you tremendously. Some people say balancing your bow makes it too heavy, but I’d rather carry a few more ounces and hit where I aim.

 

Try not to think of stabilizers as accessories for your bow. Think of them as a set of principles.

Brand, length, weight, toss it out.

Stabilizers do a few things for you.
1, they use the principle of leverage to resist rotational movement upon release.
2, they use leverage to balance the bow, eliminating the need to apply pressure to the grip to level the bow.
3, they add mass weight to the bow, allowing you to create the proper balance between mass weight and holding weight to make the bow sit still.

The brand, length, and number of weights depends on too many variables to generalize it.

My reccomendation would be to start with a set of bars lengths that meets your specific needs.

Then figure out what amount of weight works with your holding weight to create the slowest movement of your bow.

Then adjust those weights and the bar positions to get your bow to sit level without having to force the bow into a level position.

After that, you will find you might tweak things a bit to dial in your preference.

Its a carbon tube with aluminum end caps on it.

Longer bars with more weight apply more leverage and resist movement more efficiently.
Too much mass weight for your holding weight, ornot enough mass weight for holding weight leads to more movement.

 

I like 10 inch in thr front a 8 out back, i have 1oz on the front and 4 on the back. But this works for me yoiu'll have to try and switch it's your preferance.

 

It also depends on what you want the stabilizer to do for you. If you're trying to reduce shot noise and bow vibration, a super light one won't help. If you're trying to get long-range tournament balance, most go long and add a couple behind too. Then, some bows don't really even need them. I mostly hunt, so I like mine compact--7-8", and about 8 oz is my preference.

 

It also depends on what you want the stabilizer to do for you.

Good point. The OP doesn't really say what he wants the stabilizer for.

But I do have to hand it to the slick marketing, that convinces bowhunters to add another hundred dollars of excess weight and gadgets to their hunting bow.

 

Well, you should definitely just buy whatever the most fans suggest. Lol

To get the best results, you need to try a few different ones.
A Pro Shop is a great place to start.