I shoot the regular Muzzy 4 blades with the 1" diameter. Not the MX series heads. I only shoot the practice muzzy blades instead of the field tips. These practice heads fly identical to my hunting blades. After I found this out, I never used the field tips again.
Obviously, the bow needs to be tuned correctly first. If that is completed you should be happy with either the 4 or 3 blade head.