i have a m01 right now and i'm selling it. If i happen to sell it i'd get myself an ff02 from tamiya then i'll add m03 dogbones and arms to convert it into a mini so i'll have 2 configurations...maybe i'll add in a tl01 chassis as well..
about the mini's, the rwd run very fast in a straight line but it'll be hard to control during breaking. Rwd also tend to oversteer so you'll have to be smooth. The fwd are a bit slower but they push in turns and they dont spin out as much. The only down side of fwd is that the tires squirm for grip during turns but ball diffs would fix that prob