I agree with Skater. having done all my racing on asphalt I can honestly say the graphite chassis and suspension parts are not the best choice for most racers. If you're on carpet and racing VTA or USGT, don't overlook the stiffy(stifizel) chassis. If you're on carpet and running any faster class (unlikely but GOOD ON YA if you are) then the graphite is a definite option.
The thread Skater provided a link to is one of the best. John really knows his stuff and backs it up with a whopper load of tech.
There's also another thread that might help.
http://www.rctech.net/forum/electric...k-classes.html