I like the old style 3 blade. Slightly bigger cutting diameter (1 3/16")and the blade angle is not as steep. (important to me with only 39 ft pounds of KE, probably won't matter to you)
I am with Chrisrine on this one. You may want to shoot them both to see which one you like the best. As for myself, last year I shot the standard four blade 100 grain with good results. This year I changed to the three blade 125 grain with even better results. Doubt if I will change for a long time. Can't go wrong with Muzzy.
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08 Bowtech Allegiance
MeanV suppressor
Vapor Trail Strings
QAD
Carbon Force
Muzzy 125
I've used both but I find that I like the old 4 blade the best. They fly great and love the results I get with them. Some think they must use 3 blade because the have 3 fletchings but thats a bunch of bull.