revival of a good topic...
the x-fd is the one, imo, a sturdy standard...and i'm noticing it cropping up on more and more serious builds. whatever kind of rear brake you've got, it'll feel much more effective paired with a ft drum.
the shimano cb-e110 on 12G spokes is also pretty bullet-proof...use auto-grade grease and watch that bearing adjustment...i have one (from iride years ago, a "dyno" leftover i think) that's done well over 5k, with many HT's, a titan, & now my GEBE's...in other words i've really racked this wheel, & it keeps on ticking. even after all those installs & uninstalls, there's no bent spokes, & it runs totally true.
next time i get to buy a fresh wheelset, tho, it's gonna be a sturmey-archer X-FD/-RD combo...i'm hooked on auto-clutch MB's, so why not make use of the missing lever? sealed bearings front and rear, ohyeah...freewheeling pedals will be a plus, too.
for some fun window-shopping, here's S-A:
http://www.sturmey-archer.com/hubs.php