What kind of hunting do you do? Do you hunt out west where 50-60 yard shots are normal? Or do you hunt whitetails and shoot 25 yards or less?

A gain of 10 fps is not even noticeable without a chronograph. The only thing you will notice is the noise you get from shooting lighter arrows.

If you sight in at 25 yards and the target is 30 yards away, 10 fps means you miss 2.75 inches low instead of 3.00 inches low. I wouldn't give up my XT for that .25 inches of flatter trajectory.