I'm reserving judgement until I fly against one. I think the 2 speed barrel rolls and boosts could be a curse more than a blessing a lot of the time. While they get to choose which one before they reveal their dial, they're still stuck doing whatever maneuver their dial is set to. If the barrel roll they had in mind gets blocked, the 2 remaining options might take them way out of position for what they had planned.
They will be powerful when flown well, but not forgiving in the least. And with the steep cost involved, minor mistakes will leave you with your most powerful shooter doing nothing, and on their own.