Summit isn't a crawler
and for that price range, and scale requirement all you will see is redcats, and exceeds
Pretty sure
http://www.nitrorcx.com/03c09-madtorque-green.html is the same thing as the redcat one as redcats stuff is made by HSP like Exceeds is.
Redcat just has a slightly better warranty
Exceed also has
http://www.nitrorcx.com/03c20-madtor...d-rtr-24g.html and they made an 8 wheel drive version recently
http://www.nitrorcx.com/03c25-mt-8x8-black-rtr-24g.html