there's always new specifications coming out, ie the 'flavor of the month' but there are few constants. some of them are elec (2wd bug and truck) and others nitro (1/8 etc)... if ur wallet is screaming aloud, the e8 is scary enuff. granted the warranty depts u'll be dealing with are very nice. but having to in 1st place puts damper on things.
pick ur poison and stick to it, its the changing back n 4th that kills the wallet.