Ninco Raid on Scalextric Sport track are absolutely brilliant. Don't get me wrong, they are fine on any track, however, with Sport (or Carrera) smooth surfaces prevented the tyres digging in and tipping over; meaning wicked power slides!
The VW Touareg like the Schlesser is easier to drive, low slung and less prone to tipping, the trickiest of the lot, in my opinion, was the 2wd Yute' Pickup thing. We have a class racing Hummers at Farnham.
One car I struggled to get was the Bowler, it came out and seem to disappear in a short space of time, it might be just me, it seemed quite a limited run. It looks great, the only other factor which started to put me off, Raid cars were becoming expensive to buy.
I collected all the Raid cars at the time of release, sadly I sold them. Now reading this thread makes me wish I had kept them.
Good luck with your search, they are lovely cars and great fun!