Wheel characteristics?

[edgerat]

I have seen comments about certain wheels being fast and others about wheels that spin up fast. Aside from hub engagement what makes for a fast week? Based on the comments i have seen it isn’t purely about aerodynamics.

What about stiffness of a wheel set? Lightweight seem to be the stiffest wheels out there, is being stiff good, bad, other? My only fancier wheels are DuraAce C50s and some Alpinist CLX I. have a build coming and trying to sort out the wheels.

Isaac