which Nitro

[Batfish]

I, too, think the Warhead sounds great for the money. My only caution is that it's the first generation of the vehicle. Both the MGT and LST2 are in their second generation and have fixed issues that came up with their first releases. The Revo hasn't had any "big" issues that would cause Traxxas to release a Revo2 yet.
I'm not saying you shouldn't consider it, just make sure you understand that you'll probably be the first ones around with one so your local support and advice will be limited.

If you guys end up with a Warhead, make sure you come here and tell us about how it is :)