I'm planning on picking up a Team Durango DEX410R because of the new awesome price, and I'm looking for a good sensored setup for as little money as possible. I wish the Xerun came in a 100A model, because the 120A model is out of my comfortable price range, and I think the 60A might be a bit limiting (correct me if I'm wrong here). Anyway, I'm looking now at the Trackstar 100A ESC. Pretty good specs (although the 200A burst seems a bit low), small size, nice looks, and ROAR-compliant:
http://www.hobbyking.com/hobbyking/s..._Car_ESC_.html

As for the motor, I'm a Tacon lover, and their sensored motors claim higher wattage than Leopard's, at a lower price: http://www.hobbypartz.com/96m203-365...-sensored.html

And of course some Gens Ace LiPos
http://www.hobbypartz.com/98p-25c-4800-2s3p-saddle.html

If anyone knows of a cheaper setup than this that would actually work well in a 4wd buggy or has some other recommendations, I'm all ears