I really enjoy my 2WD stuff, but you have to mellow your driving, and they can be really aggravating on a loose track. Having said that, I don't see much point in the 2WD short course trucks. Compared to stadium trucks, they're heavier, they don't fly or land as gracefully, and they don't hook up as well with the narrower tires. Basically, unless racing other 2WD SCTs, you'll get your butt kicked. Stadium trucks and buggies have the edge in 2WD.
If you're wanting to race, probably the best bang for your buck is the Associated RTR SC10 4x4. Very tuneable, very capable, and you can be set up with 2S LiPo for under $400. I went a different route as I do not like belt drive, but I am unaware of anyone who has been disappointed with the SC10.
If budget is not a huge concern, there are tons of options, including the SC10 kit, OFNA TS4/Nexx 10SC or Jammin SCRT10, Losi TenSCT, Durango DESC410..........