[First-Episode spoilers for a show that I cannot recommend to even the most die-hard Mecha fans]
My potential enjoyment of Linebarrels of Iron was kind of doomed from the start. It filled a checklist of things I didn't like (super robot, bad CG, a ridiculously unlikeable main character, shitty Gundam Seed-style character designs, cliche'd Eva ripoff plot).
But I was starved for Mecha during one of the Broken Blade/Gundam UC lulls, and the mechanical designs are really nice...
However, no matter how doomed it was from the start, I pretty much dropped it because, at this moment, I knew that I'd never be able to relate to the main character. When faced with the following situation after having a giant robot and a magic nudist land on him:
He took home the naked chick AND LEFT BEHIND THE ROBOT! Who does that!?!
Also, the show is poorly animated.