I agree with the others. I shoot an Xtec and can tell you they are much like any other single cam bow. They favor a stiffer spine. Depeding on what arrows you go with also makes a difference. I shoot Gold Tips and with my length of arrow and draw weight, I fell at the bottom end of a 5575 meaning I had room to play with if I cranked up the poundage. These arrows are actually good up to 72lbs based on the chart.

They tuned well and fly like darts with BH's.

If you're unsure, just buy a couple of the size recommended and couple of a slightly stiffer spine to find which works best.