My DD used it last year and liked it fairly well, although she said that sometimes she felt a little too much vibration. This year, she went to a shorter -10 Miken Rain (MV3 was a -12) and hasn't complained about vibration, so it could have been that her bat was too long and she wasn't hitting the ball in the right spot.
Other than that, she loved it (and I loved it too). It's now sitting in our laundry room while I try to figure out what do do with it!