My fast commuter for fair weather summer commuting (or training) is a 1984 Raleigh Team USA. I got it at an LBS for $250. Original asking price was $325. The Team Professional was the full on race bike, the Team USA more of a sport tourer. After two seasons I am glad I didn't hold out for a race bike. All I've done is put compact bars (Civia Emerson) and Tektro levers on her. 27" aluminum wheels roll better than 700C with the same tire. I have 90psi Continental 1-1/8 training tires on it. I feel certain that I am getting as good a glide as any 28mm major name tire out there... maybe even dare I say it 25mm. I haven't weighed it but it is seriously light because it is so low tech. Steel, of course, but not just any steel, branded steel... I don't think its 531 but its something close. FWIW.
H