I'm completely and utterly torn.
On the one hand, in terms of group I'm most into right now, MM hands down. Getting to meet Sayu and 9-11kis?
But MM comes with the most baggage. No doubt I'd have to spend all of my time waiting in lines for their events, and for some cons, that would mean missing out on panels I want to attend. Luckily, Jpop Summit and Japan Expo didn't have those sorts of panels for the most part, so I didn't have to worry about schedule conflicts, but even so, it was nice that at Japan Expo, due to it being Kikka, lines were smaller, so not only was there less waiting, but we got to go around multiple times and easily sit in the front rows without splurging for premium privileges, and just in general a more intimate setting.
Also, I NEED to meet Berryz so I can ask Miyabi about The Wolverine.
Dammit, choices, choices.