I just booked a Dall Sheep hunt, and am looking for some informed opinions on whether I need to upgrade my bow and/or bow set-up. I have been shooting a Bowtech Assassin for over 6 years (on elk and deer), and it is working well for me. The only upgrade that I have made is adding a QAD drop-away rest. I am pulling about 62 pounds at a 27 inch draw length and shooting Carbon Mayhems with G5 Montecs. I shoot consistent 4 inch groups at about 45 yards (I don't really practice at further distances, because I don't have any pins set out further). I am willing to invest the money, and thought about getting a high end bow. My questions are: can I expect much better performance from a high end bow? What am I missing?