I've been riding a 2007 7.3fx with disc brake...It's been wonderful. It's my main commuter...Also, my first grown up bicycle. It's comfortable, solid and durable. Last year I had the flat bars replaced with drops and added bar-end shifters and ergo-brake levers and new pedals (Shimano's dual platform/clipless) for comfort and I've never looked back.
It's also been the bane of my local bike purveyor because as he's tried to get me onto a new roadier frame, I've stuck with the fx. I've gotten a used Cannondale CAAD 4 road bike, but have only put a couple of miles on it because the fx is fun to ride...Especially on long rides.