That is a good one for sure. You will get different opinions from different people because that is what they shoot. I personally shoot the QAD Ultra Rest because it "Contains" the arrow when in the cocked position and will always be in the ready to shoot position when you are ready to fire that bullet.
Go under Reviews at the top of the page and look under rests and you will see a lot of rests in their with really good reviews but most dont have negative reviews.
If going with the Ultra Rest, spend the extra $10 and get the LD model. Makes a difference with problems with bounce back from the paddle and keeps it from bouncing back up and catching a vane on pass by from your arrow.
Shoot a couple different ones and see what one you like best. I just like the "Containment" feature and that is why I went with them. You never know what angle you are going to have to shoot your bow from.