I have been eyeing up a rough original basement find 84 Trek 520 to use as a touring/commuting rig and today I stumbled upon the exact same bike as yours. After looking through this thread now I'm stuck as to what to get, except the dude with the 520 seems to have disappeared and after this thread I'm really starting to like the Cresta in blue with some nice looking lugs! I may have to go look at that Cresta now and hope it fits as well as it looks like it may. The shop that has it did a quick tune up on it and got it rideable using mostly original components, replacing consumables. Bah for being an adult and having to make these adult decisions!