Schwinn Prologue for that Tange Prestige goodness. A lot of other suggestions people have had. If you want an apex predator that's actually still comfortable, get a Davidson Impulse. I realize it's more west coast than east coast with regard to awareness and availability (you'll have Spectrum Cycles with Tom Kellogg), but the Impulse is a dragon slayer, especially with the right wheel/tire combo. Part of the time, they sell for a lot cheaper than they should--I got a bizarrely good deal on my (very used) frameset. Maybe it's a poor suggestion. I'll echo late '80s lugged Specializeds in race geometry (Allez, Sirrus) as being very, very well sorted bikes/geometries. It may not be the super ultra lightest frameset out there (few frames are), but the numbers are bang-on and they never put a foot/tire wrong. There are enough out there that a few will fall through the cracks for a good price and you can scoop them up.