I've posted it elsewhere, but for completeness' sake here is my winter mile eater.
Tange double butted frame courtesy of SJS - think it cost me £60 or so 10 years ago. Shimano RSX chainset, 7 speed cassette, RSX hubs, MA2 wheels currently wearing 700x28C Paselas; Deore rear and RSX front mechs; Dura Ace downtube shifters; Cinelli bars and stem; Shimano "aero" brake levers and 105 brakes. Rolls Saddle, SKS 'guards, and M520 pedals to finish.
Although it cost me very little compared to other bikes that might lurk in these pages, it's passably light, very comfortable, and a reliable performer no matter what crud is thrown at it. It is also utterly silent in action, in surprising contrast to every other bike I've ridden that seems to make some kind of noise somewhere - be it just the tyres on the tarmac. There's also much to be said for simplicity (7 speed and DT shifters).