Whats the best 2D vector based animation prog? Opinions...

Nope. Moho's missing something - widespread commercial use.

It's common that when a particular app is not used by a large number of studios, that app gets relegated to a kind of second-class status.

While it's a drag, it could also be an opportunity in disguise. All it'll take for Moho to hit the big time is a high-profile project or two that uses it and mentions it by name.