I too recommend building your own wheel. It's really not rocket science. As for the hubs, I have been tempted to try the Schmidt, mainly because it offers a bunch of different versions, such as one for smaller wheels, narrow forks, with disk brakes, and so on. But I've had a shimano NX30 for several years, and it has given me no trouble at all. I've also got the new Sturmey Archer with built-in drum brake (which is really cool!), and I'm in charge of maintaining my wife's bike which is a 1966 Raleigh with a SA Dynohub (it is a great hub, but building it into a wheel was a pain in the ***!).

My sense is that if you are using big (26", 700c, 27") wheels, you don't need the Schmidt. If you are using small (16", 18", 20") wheels, you will burn out the bulbs unless you get the Schmidt for small wheels or go homebrew (which is what I do).