Great heads, very durable, very affordable. As far as weight is concerned. The difference between a 125 and a 145 grain isn't noticeable. But, if you go from 125 to 160 grain, you'll start to feel and hear a difference in the bow and arrows spine. They will kill anything you hit the lungs on. Deer, bear or elk.
Derik, that dude is cool. I spent time with him last year down there.