Other mecha MMO you played

I just want to know what other mecha MMO out there to try. I like mecha game but there pretty rare. So please give a little description or review of the game. Personally I had play SD Gundam Capsule fighter, CB, and Exteel.

There's also Mechwarrior Online and Hawken, both of them currently in development.

If you want fast paced action, go Hawken.
If you want slower paced and more realistic combat, go Mechwarrior.