I have been lusting after a Trek 520 for some time. I don't know why exactly. I am not in a stage of life where I can do any real touring. But it seems a perfect second bike. For long (32 mile each way) commutes to work. Rainy rides. Trips to the store.
I found a decent deal on one on the Washington DC craigslist today, if anyone needs one. The timing is bad for me, as in I would probably have to sleep on it when the wife found out I bought another bike.