[jimmy]

I'm just building a new DB01 at the moment to take to Italy for the Euros. I think if you keep it fairly simple then it's a great car. Of course, you have the option to stick tons of hopups on it, some like the CVD's are a good idea, others like Alloy Hubs and alloy steering are more looks than anything as I've never broken a plastic item and the alloy make the car feel different (worse) I think.
My new car has the rc Champ screw set, which I've used because I had it kicking around for ages - but if I was buying a set now I'd get the ones from Tonys screws.

My new car has:

front one way diff
slipper
501X shocks
alloy/titanium screws
501X (worlds?) ball studs
501X rear diff (all metal)
Kanzen ceramic diff balls

On the way:
TA05 carbon battery strap (to stiffen the car a little)
carbon front rear middle top covers (to stiffen the car a little)


pros and cons?

Pros: with minimal hopups (TRF shocks) the car is awesome.
Strong, somewhat sealed from the environment, reliable
easy to drive

cons: motor and diff access is a little poor - you have to undo 10000 screws.
kit screws are rubbish and almost impossible to build the car with!
the chassis and other parts are best to be pre-tapped to make it easier to build - I used a screw on a drill to do this.
The car is easier to drive on slippery tracks - when it gets high grip the slightly flexible chassis probably makes it a little less consistent and predictable than my 501X.