A couple of things to think about:
Hub sound - each brand has its own distinctive sound. Chris King hubs can sound like angry bees. I like WI's sound. Others may be silent.
Easily serviceable as jobob says - Check on this. Chris King hubs take a proprietary tool set which your shop may or may not have. Other hubs can be serviced by the owner (i.e., you) with standard tools.
Pawls - the pawls inside the hub are a little one way ratchet. The number and design affect not only the sound, but the response of the hub. For instance, if you ratchet (or back pedal) when mountain biking to clear an obstacle, more pawls and engagement places will mean your hub will rotate forward faster upon pedaling forward again. Yeah, I know this is a terrible oversimplification, but hopefully the concept is clear.
I've been very pleased with both White Industries (WI) and Hope. We've had several wheelsets built from each and been happy.
Last edited by SadieKate; 01-13-2010 at 01:09 PM.
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.