I am not a seasoned veteran when it comes to harvesting deer, I'm learning, but I do shoot alot. I have 3 longbows and 3 recurves all by one maker but all different in limb length and weight. To me there is an addiction to the speed of which I can drive a 450gr arrow to speeds well into the 200 fps mark at an absolute flat line to 20yds with amazing accuracy feeling like a shot out of a gun. The pure beauty and poetry of an arrow at 740gr launching whisper quiet from the smooth propulsion complete opposite of the explosion of the lighter is so beautiful, this quietness and stealthness is felt while watching the arrow in it's flight come to the point where your eyes are focused, so amazingly beautiful! I may not see the arrows flight near as clear on the fast one, seems I blink and the arrow is there, pretty cool, pretty awesome, but very different. I think both ways can be good on deer. All my bows, with no exception seem to enjoy a balance around 10.5 to 11 gpi. Always seems to me from my perspective, just recently revisited my heavier setups, are better for hunting for every reason I can think of. There has to be a point where you cross a line and start to experience deminished returns in performance in one way or another. 10.5-11gpi is where it is just short of that point for me. The lighter ones are better for target shooting, the heavier better for hunting. Beware of the man who only has one bow, and one setup he probably knows how to shoot it! You could shoot a rabbit with your elk hunting setup and it may not be wrong, but shoot an elk with your rabbit hunting set up and it would be criminal. We owe it to ourselves and our game to think, use sound judgement and hunt with honor leaving a legacy worthy of repeating. Live with passion!