I'm going to use my G3, but Jim did offer me his (and it's very quick) a while back, and may still have it. Not sure Craig would want to part with his, but it's certainly a way to get into the class.
Having said that I would get a Wizz built to the same spec as Andy if I was starting out today. Of the three chassis, it is easily the best to work on (and you will need to) thanks to the brush design.
As for banning Neo Marc, the class is by definition any magnet, and getting them right is half the, er, fun.