Boba Ben
Super Freak
I'm not knowledgable enough of all the small Godzilla changes within each era to know how accurate each figure is, like I would be with a SW item, for example. I have heard the 2014 Neca is quite nice though. As adult collectors we get hooked on the presentation and at times mistake price point for quality. Perhaps that's what draws me to Monsterarts over Neca but I also know that Monsterarts is a dedicated line that will continue over the next few years while Neca may or may not continue to make their figures. Anyway, I'm happy with Tamashii.
I have both Neca and MonsterArts and enjoy them both for what they are. Neca also doesn't have the license to make any Toho monsters besides Godzilla, so that's something to keep in mind. I do enjoy taking my Neca figures down and posing them and stuff, though, and since they're cheaper I don't have to be as ocd about them.