If you're in a league with no compression testing, J3a. Otherwise get the Z.
Kinda comparing apples to oranges here. J3a was proably the best and most popular bat for asa last year and any asa z I've hit sucked imho
J3A out hits a Z for distance any day of the week... Exit speed pop and distance all go to the Juggy 3...
Now for the feel of the bats thats your preference..whippy or stiffy lol :bigok: