Most entertaining: '73 Colnago Super.

Most "classic", '71-72 Cinelli Supercorsa.

Most relive my youth: '73 LeJeune CdM.

Most oohs and aaahs from others who know or were around at the time: '76 Confente. Second would be the '69 Colnago, lots of riders of even mod bikes appreciate that one.