Those 2stroke Baja's are really cool. RC can be a fun hobby but as said you really need a club or at least a couple buddies who are into it also to really enjoy it.
I had a Traxxas......rustler? I think? it was a 2wd baja truck, electric. Fun, but it broke constantly and parts were annoyingly expensive. The slightest bit of abuse and it fell apart. Remember I taped an eTrex to it and got 45mph out of it, had the most powerful brushed motor around and a 7 cell 8.4 pack. 'cept the motor would burn up after 10-12 uses, and the motor controller thing would go on the fritz at the first sign of moisture. I ended up gutting it and putting the electronics in a model boat.
On the other hand, I have a radio shack YFZ450 RC quad. 4x4, not as fast as the traxxas but does like 25, and has been submerged multiple times, crashed at max speed countless times and generally beat to hell, and it still works perfectly.