I installed some of my daughter's 60 grain tips and the 70 lb, 27", 5575 tear was reduced to 1/4-3/8" without resetting laser center shot.

Based on all this, I bought 6 7595 GT Prohunters to try. The glue is drying on the fletchings and we'll see how it goes tomorrow after resetting laser center shot. It is really not that big of an investment in the grander scheme of this sport.

Goldtip must use OT2 because they maintain that the 5575's are adequately spined for my set-up.