Now that I've been up for a while and had my coffee, here's some more info.
You might also consider Taigen's version. They come with the basic metal upgrades (tracks, sprockets, zinc gears) and Taigens 2.4GHz control unit.
Right now they have two options:
New:
http://www.imex-model.com/product/TA...le.html?cid=89
Scratch & dent:
http://www.imex-model.com/product/CT...29.html?cid=89
The prices on the site are list prices, and you wont pay that. If you call 1-800-458-5785 or 352-754-8522 and ask for Erik, tell him the folks at RCU sent ya and he'll hook you up. The best part is if you have any problems, you can just give him a call and he'll set it right.