I have a 27" draw length, so that isn't a problem for me.In my opinion if you can get a faktor 30 a good price I would go with that over the nitrum 30. Last year I shot the factor 30 And pretty much all the hoyt lineup for hunting bows. I was impressed with the factor 30 as far as balance Speed and feel on the shot. But what I did not like was the string angle on the 30 inch bows.
If you can handle the steep string angle with your shooting style ( Which I assume you can if you're looking at 30 inch ATA bows) you could probably save yourself a couple hundred dollars at least by going with a faktor 30 over the 2015 bow line.
Backwall is firmer due to the more pre loaded Control Cable. The Control Cable is the one that has less tension on it, so when the draw stop hits on the Control Cable on the top cam there is more give and by pre loading the tension at rest the give is noticeably less at full draw. This paves the way for the firmer wall that many are experiencing in the Nitrum series.I thought the backwall on the Nitrum felt better. I went with the Nitrum...They use the same cams so I was slightly torn/confused about the difference in backwall. The selling point was the technology in the zero torque arm and the split riser. Both are great. I noticed a slight difference and the nitrum felt slightly better in my hands. Either choice is good.