I don't believe performance is everything. The feel of a bow and the ability to consistently hit where we are aiming are of the upmost importance, but having said that I don't see why you can't have your cake and eat it too. In an ideal world you could shoot two bows while controlling all variables like draw weight, arrow weight, string design, etc. in the real world it might be a 62" vs 60", a 400 gr arrow vs 550 gr arrow, and on and on. Is there a metric other than FPS that you like to account for this? I don't know much about dynamic efficiency or stored energy per pound of draw but I'd like to hear a discussion about what performance variables you like to pay attention to. Looking forward to hearing from yall