Hi all, I require some input. Between Tamiya's Pershing and Tiger I, which would you choose to keep a Sherman company? Please rate them on the following factors

1) Ease of build
2) Off road ability
3) Ease of maintenance
4) Special features (if any)

I am leaning towards the Tiger because of its history but those overlapping wheels worry me. Do they collect a lot of muck if I drive it through thick grass?
My Sherman is great for bashing through grass. It traps a twig or leaf every now and then but the entire wheel/track assembly is very easy to clean.