ORIGINAL: sheograth
The HPI Cyber 10b shouldn't be mentioned in the company of these other buggies. But yeah the DF02 and 03 are good.
I just left my DF03 in favour of a HPICyber 10B and to be honest, the Cyber is indeed a better car. It is better balanced and has a much more service-friendly design. The durability of the parts are much better than those of the Tamiya DF03. They botth have ball diff, but rumor has it that th Cyber's Diffs are compatible with those of Durango DEX410 if you feel the urge to use oil filled diffs. Many parts from the HotBodies D4 may be used on the Cyber. You should get a slipperclutch and probably alu-dampers as a minimum for your new kit.
Thord