RE: have $500, which truck???
Savage X 4.6 RTR.
Depends of course on what you want to do.. General rule of thumb is, Savage to bash/launch, etc.., Revo to race..
The new generation of Savages has done away with its traditional, perennial problem - crappy diffs.. That's history now. So this truck should be rock-solid, ready to thrash - hard - right out of the box...