Nice Bike!
I know I just bought a NOS 2005 Trek 520 for $849.00. I originally wanted a Co-Motion Americano Co-Pilot but the dealer in Portland Oregon just had no interest in selling me one. So then I found the 520 to be such a sweet ride I just had to get one. I've had mine about a month now.
I heard the stock seats are bad so I immediately ordered a Brooks saddle. But while I was waiting for it to come in 250 miles or so later I found the stock seat to be very comfy. I don't even use padded trousers any more for anything under fifty miles.
I'm going to upgrade to a Tubus rear rack and lower the gear inches. 25 is just to high for the low end Ay! A set of Ortlieb panniers front and back I'll be good to go. With saving over three thousand dollars from what I was willing to spend on a Americano Co-Pilot I can easily upgrade, equip and have lots of cash left for my next tour.
I really love the 520 more and more every time I ride it. It's so smooth and stable but very maneuverable when you need it. Funny how things seem to work out for the best.
See you on the road!
Ciao,
Timothy