Thanks Wylie,
A great help. I'd like to stick to 4WD as its what I know (or knew!!).
I'm think the Associated 4wd RC10 b4.1 or the Schummy Cat SX with suitable LiPo Cells and ESC.
I'll be going for a 2.4ghz stick controller though

can do this wheel stuff
Do you race 10th Short Course???