MCD are very heavy and somewhat unforgiving because of this when compared to FG and HPI buggies. Rwd is so much more rewarding to drive, the 4wd is more point and shoot but is a whole different story in terms of drifts and big rock slinging powerslides - thats where th 4wd becomes fun. If you're looking for the fastest way round a track the 4wd is the go but you'll be hard pressed getting any wheelies if that floats your boat. Go with your instincts, get any of them. Chances are like allanach says you will be looking elsewhere soon as no one car will have everything you need, then sooner than later you're a 2 stroke junkie!