.Nilo.
I settled for a pair of Klipsch Heresy II's for my Sansui AU717 and I have to tell you, the match up is spectacular. The II's placed close to a corner produce more clear, tight, deep bass than you will ever need. I am extremly happy with the current set up, Klipsch "warms up" nicely when matched to Sansui and it is especially fabulous when playing vinyl on a quality table
I believe you will enjoy Klipsch and Sansui, I would just make sure and keep the production years within close range. You mentioned the Heritage series ... IMHO that is the correct series to match up with a bad ass Sansui!!
Enjoy!!!!!
BogieDr