I used to shoot at 80 lbs just to get extra speed, but that is also 10 years ago, and only 50% LET-OFF. Now I shoot about 68 out of my new Outback, I have approx. 420 grain arrow flying at 274 fps. Plenty to hunt basically and N.A. big game. Comfort is number one along with confidence, which will come from tighter groups. Basically it all refers back to having a bow you are comfortable with regardless of who makes it.