In your opinion what is the best mech? What in your eyes is the most unstoppable force of ultimate force?
Be it a Super? perhaps a grunt mech from one of the Super Robot wars games? Maybe not even from an Anime, your opinion is all that counts.
Lets not have this degrade into a my make-believe physics are better than your world bending, life consuming powers arguments either...
I digress my favourite Mechs are:
The ultimate king of Braves who transcends fate Genesic GaoGaiGar, Awesomeness in a tin.
Gunbuster, one of the first Mecha animes, I ever saw back in the good old days when the Sci-Fi channel used to broacast a late night "japanimation"
I'll let you into a secret, It's one of the few works that brings a tear to my eye. The end is just superb.
and last but not least
Shin Getter, an awesome redo of a classic.