Mai is best at second, I do this
With Andy I got 3 meters, don't waste any with him (maybe one according to the context)
Then, mai with meter is scary, since her neomax changes completely her playstyle, some people say that is stupid to spend 3 meters and her HD just to do her neomax, but IMO she justs need that, since my game with her is zoning, and rushing with her searching for long combos is really risky. I can pull one or even 2 neomaxes for matches, since she gains meter REALLY fast
The third character is yuri, since she can make meter fast, and with her I don't need much meter I'm fine
btw, mai vs kyo matchup is like 9-1 for kyo lol