I'm currently using a Z7. It has always been good to me. Compact for blinds and stands. Pretty light. I always have somebody comment at the range that they wish they would have kept there Z7. Mathews new Creed is a combination of the Z7 and the Heli with split limbs.
I shoot one and like it. Very smooth draw and good solid wall. You might want to try the Helim as well. I didn't see a big improvement from the Z7 to the Helim so I will wait and see what comes out next year.