Couple of points....
Ask Jeff Cuffs if the RDX works in stock on carpet.
As far as the MI2EC, Having run for Schuie for a year and running their cars for close to 5, I can honestly say the EC is the best car they have put out. That said, The bottem line is you have to run what is comfortable to you.
Tekno RC - Schumacher - JConcepts - LutzRC - 3DGY - Race Ready Products