My kids were shooting some 2016s and some 1916s and they were pretty happy with them until I bought them some full length 1716s. Huge difference. They could hit their target much better with the 1716s. Also, you could see the sideways "kick" when they shot the 2016s and 1916s. No kick with the 1716s, which boosted their confidence as well.
By the way, my kids shoot bows that are around 35#@28", so that makes them shooting in the low to mid 20#s at their shorter draw length, which they find very comfortable.