Looking to buy a small car that's super-quick

[ReV:-O]

Thanks for all the advice guys. I'm not really looking for an on-road car since i'll be driving it on uneven terrain. I think that means I'd probably be looking for a 1/10, rather than a 1/16.

What I'm really looking for is just something really cheap, with a really light, simple chassis but that can handle the power. Maybe something like the Ansmann Macnum or Madrat. I know Ansmann arn't a great make but they are cheap, which is what I'm looking for. Theres also others like the Traxxas Rustler/Bandit, Losi Speed-T, Associated RC10B/T4.1, HPI E-Firestorm, and I'm sure there are loads more.

Idealy I'd want to buy a roller so I could stick in my own motor, esc and lipo; that way I could choose the fastest option, like choosing a 4800kv motor and running it on 3s, then upping it to 4s for speed runs. I don't really want to convert a nitro chassis because it will probably work out too expensive.

Also, being waterproof is a fairly important factor for me. I'd like to be able to take it to the beach and not have to worry about it getting wet etc. With my Vorza I have to be careful where I drive it so as not to get the electronics wet.

Just as a side-note, some of the battery compartments such as that of the Rustler/Bandit look extremely small, and I'm not sure if I'd even be able to fit a decent 3s or 4s lipo in there without squashing it to pieces!