Handbuilt or Factory Wheels?

Thanks for the advice all.

@DB, fair point on the CXP33 - i wasn't overly impressed by them either to be honest. Could you recommend me some components for a really stiff wheel?

have you contacted someone like the wheelsmith? sure you could get a pair of gigantex rims laced stiff enough for your needs, perhaps not using traditional spoking though

I have had a look at the lower profile gigantex rims, but lack of alu braking surface turned me off them.