1:5 & 1:6 scale Radio Control Racers

[pcgms]

I'm interested in racing 1:5 or 1:6 scale radio control F1/Indy cars. Since it is a big sport in Europe, I would appreciate any infornation on this topic. I have looked at the H.A.R.M. chassis and FG ones. Amy suggestions?
John
"I chase my dreams today, for tomorrow may never come."