The Miche hubs are super cool. Because of the way they're built a cog swap is so fast.

but that's the bummer too... the cog and hub only work together. that way you need (perhaps) to repurchase all your cogs at once, and you can only use Miche cogs. They're plenty beefy though and are a rad choice for a mid-range fixie hub.

IMHO if you're looking for something in that price range, save a couple bucks and buy Surlys. (yeah yeah, Surly, whatever) but I've run a bunch of them and have never had an issue - and i dont have to sweat it to leave my bike locked up outside.