There is one other choice. The tank pictured on this web page will be available soon. Not much about it on the web page yet.
http://www.rctanks.us/index.htm
I have seen it at the last WOH show. Nice stuff but not cheap either. All metal seldom is.
The Sherman is out of production. Shame, because they where awesome.

The only time I have broken my Stuart(s) is turning on grass.