well the boy has been doing so well he got sponsored and upgraded. He shot the Z7 and the Monster 7 quite a few times. Was very impressed.He said the Z7 was a whisker smoother,had no hand shock at all and very consistent ,great wall....where as the M7 was almost the same but had a little bit of a harsher valley and hand shock which a string stopper would fix but doesn't come with it like the Z did.very consistent also.What sold him on the Z was mainly the better valley which makes it easier to pull.He shoots about 2 hours a day and that extra hump to get over would wear him out faster.try 1 you will like it