Kanto trio=Three interesting and unique young trainers, all with great personality's.
Shinou trio=One trainer that's incredibly old, one deadweight breeder, and one pointless coordinator.
Yeah, I think it's safe to say Kanto trio>>>>>>>>>>>>>>Shinou trio.
(And Juputoru, if you think about it, the exact same thing can be said for every generation's Pokemon. Except for a certin few, most of them are only used once every few years (i.e. Corphish, Fortress, Mudkip, Lotad, Beautifly, Bulbasaur, Torkoal). And I personaly prefer little personality to the same, boring, one course personality of Hoenn.)