My two cents worth
I'm running an Edam Razor 2. Because I'm so far from a track, I haven't gotten to run as much as I'd like but I noticed in practice I wasn't giving up anything to the other cars. I'm running an S&H 21 which seems to provide all the oomph the car can handle, and the beauty of it is I'm running it on a shoestring budget (daughter starts college this year, oh boy.) Nothing against the others, they are proven cars, but this thing looks like theirs, seems to run like them as well, but doesn't carry the price tag. An added plus, I let a friend of mine drive one, I think on his second lap he had an oopsie (fairly new driver to the hobby) and didn't so much as scratch the car (screwed up the body pretty good tho.)