Like with so many thinks in bicycles, there's diminishing returns as one goes up in price. I think the sweet spot with road level hubs is 105, and with MTB stuff it is XT. You can pay more to get marginally better quality, aesthetics and lighter weight but you really can't wrong with these unless you are doing something really harsh. Phil Wood stuff is pretty and gives you great bling factor but it is totally overkill IMO. Nothing wrong with them, just that if money is plentiful enough to get those I'd invest it doing a custom wheel set with better rims using XT or 105 hubs instead and use the extra money to tour with. Of course, YMMV.