Started my Cannondale habit with a '91 SR300, dearly wish I still had it to this day. My '97 R500T served me, and then our daughter until last fall, should have retrieved the frame and fork, oh well....
Now my non-vintage ride is a 2012 CAAD 10, with Ultegra 6800 swapped in. And for all the bad press about being overly stiff and such, it never bothered me at all to ride any of these bikes for long distances or time periods. Even the SR300, with the criterium geometry you could get back in those times, I just flat enjoy(ed) all of these aluminum framed wonders.
Bill