Personally, I would go with the Kyosho Mini Inferno ST, if you don't already have the RC18T. From what I hear, the Inferno ST is really durable with a few small hopups. If you already have the RC18, I would get a CF chassis for it. I've seen em, just can't remember where.
“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens