Need a suggestion for a friend

[BP-Revo]

Ok, I've got a friend who is going to build and R/C in the near future. However, his requirements seem kind of tight, and I've been hardpressed to find one that fits them.

Anyways, he wants something thats:

Brushless (of course)
Fast (40+mph)
Reliable (like Revo level durability)
4wd
Decent Ground Clearance
Less than $400 (excluding batteries).

The only thing I can really think of is the MLST, but I'm not so sure about it reliability wise.

Any suggestions welcome and greatly appreciated.