The Fuchikoma from Misamune Shirow's Ghost in the Shell manga are the best mecha ever. The wee mini-comic in the series about one of them trying to lead a revolution is freakin hilarious... If I can find a picture of one I'll post it.
It would EAT warmech. For lunch. And make witty comments all the while. I am refering to the picture that used to be posted. Not so much that red x... I think warmech could take the red x.