I voted for the Action Legion.
I really enjoyed their recent storyline and they also seem like the least problematic version to me.
I'd love to see the reboot team brought back in some capacity too but they'd need a lot of clean-up work to make them viable again (i.e. fixing 'Jarth', ret-conning Sensor's whole origin, ditching LeVIathan and bringing back Gim, amping up their villains from the tools they'd become, de-Terra-Forming Zoe, sorting out whatever was going on with Andromeda, blowing up Legion World and getting rid of the Kwai, making that whole dumb Ra's al Ghul story a bad Universo dream, and so on and so on).
Waid and Kitson SO mangled their relaunch of this team IMO that the threeboot is beyond unsalvageable to me and I have no interest in reading anything about them ever again.
I'm curious about EDE's (and others' I think) idea for an All-Star Legion book. How would that be any different from a fourth reboot of the team? I'm not against such an idea (in fact I'd be all for it if it had a good creative team and the market could support another Legion book) but just wondering if that's what they're really asking for.