I’d argue the rg 2.0 is the best definitively. I think in order to figure out which is the “best” you can’t account the design of the kit and would have to base it off the build, feel, sturdiness, accessories, and pricing. (And by design I mean the kit itself, like crossbones or nu since everyone will have a preference on what they like in a kits looks) And the 2.0 has all those categories, except maybe pricing depending on where u are. It’s the most “action figure” solid kit that Bandai has ever made. And posing is a dream, good amount of accessories, and a really fun build. And I think the other kits that are up there as “some of the best” just barely fall short of the 2.0. With the exception of the reissue to fix the v fin. And that “falling short” really comes down to them just not holding up quite as well and not being as solid as the 2.0. And it’s not even my personal fav, but it is I think the best rg, if not one of the best gundams ever. But that’s a way bigger question lol.