I just find 4WD stuff a bit boring on track tbh, so that may be my prejudice. Just loads and loads and loads of grip isn't really challenging, it's like driving FWD but quicker. I'd rather have something a bit of a handful than something really competent, like an overpowered VX A45 is going to hate the track, plus the higher CoG is going to make for something more unstable than your other choices I think.
Could always buy a non-charged M3, live with it to see if you like it then charge it yourself?