I've been commuting and touring on my Surly Long Haul Trucker for 2.5 years now and I love it. It's my only bike, so I've used it for my 36-miles-per-day commute, several centuries, STP in one day (204 miles), the Cannonball (275 miles in one day), and a couple of 10-day, 700-mile solo tours. I've got over 16,000 miles on it now and it's still going strong.