one last little thing. i am unsure if he still has it but ask james baker of xbotz.com about his bot Unity its an invertable parallelogram wedge powered by drill motors. it was all complete and ready to run and it was available with and without radio gear. if its still for sale he will tell you the price of it and more about it.
if you look on http://www.xbotz.comwww.xbotz.com you will see a few of his bots on there.