[ShockerCon]

I like RH-03. The only one of it's modes I don't like is the headless helicopter mode, and that's just because the cockpit(s) is/are so lousy.
I like Go-BusterOh. RT-03's boosters on the sword is brilliant, I dig the propeller shield, and I like how the head has the colors of the three main senshi on it.
Go-Buster Beet is boss. Yeah his shoulders are low, but who cares when he has fully possble arms(talking about Minipla)? Not to mention swordguns.
Buster Hercules is a good combination. It's a good contrast to Go-BusterOh in the since that Go-BusterOh focuses more on being an all around armorment for Ace with weapons as an after thought, while Hercules is all about the weaponry.
Great Go-Buster is fantastic. Love the spear, love all the business going on behind the head, love the head, all around win.
You should have a pretty good idea about how I feel about RaiOh by now.
I'm still not sure how I feel about FS-0O. It's definitely an interesting remold, turning a rabbit into a frog is so simple it's genius. Maybe I'll like him more once I get the Minipla.
Also, it seems that, A) your opinion if mainly based on reviews, B) you're focusing too much on stability issues and such that you may not ever have, C) you should focus on the Minipla which are way better in every way by default.
Though too be honest, I don't have a single piece of Go-Busters merch, and all of my opinions are based on appearance.