What Northwind said, only a little more politely.
Those Crank Bros wheels are a Royal PITA, spares are just about non existent, and they don’t even perform all that well for the money (and I’m talking about their discounted price, not their original RRP). The looks are very Marmite too (I’m in the hate it camp, some love the look though)…
Just took delivery of my new wheels today, almost loathe to recommend Superstar given some people’s experiences, but got some Superstar Switch EVO hubs on Pacenti TL28’s for £160 (in the sale right now) which is a bargain. The hubs are (I think) rebranded Novatec, and have cartridge bearings and easily replaceable (and cheap) freehubs, so should last OK at least. The hubs are also totally adaptable for any axle standard.
Of course there’s also the option of Hope Pro’s on Stans rims for about £300, or to be honest, a whole host of other options. Personally I’d steer clear of the Crank Bros wheels.