I would not buy used magnepans. The 3.6 has delamination issues that are atmosphere and age related. A new pair of Magnepans 1.7s would be a much better buy. They use foil instead of round wire for the "driver" and delamination will be minimized (or gone...).
Used Thiel CS2.4 would be a more traditional option (and my vote). They can be a touch bright but have very good bass to off set it.
Focal Electra 1027S:
Well balance, clear mids but a little light in the bass
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1309213779&/Focal-Electra-1027S-macassar
Dynaudio C1:
Do a google search, countless good reviews.
http://www.audiogon.com/cgi-bin/cls.pl?spkrmoni&1309611046&/Dynaudio-C1-maple--pristine
Dynaudio Contour S1.4
Cheaper alternative to the C1
http://www.audiogon.com/cgi-bin/cls.pl?spkrmoni&1307511192&/Dynaudio-Contour-S1.4-cherry-m
I have not heard the Usher Mini Dancer II but they are also getting very good reviews and look very nice.
Used Thiel CS2.4 would be a more traditional option (and my vote). They can be a touch bright but have very good bass to off set it.
Focal Electra 1027S:
Well balance, clear mids but a little light in the bass
http://www.audiogon.com/cgi-bin/cls.pl?spkrfull&1309213779&/Focal-Electra-1027S-macassar
Dynaudio C1:
Do a google search, countless good reviews.
http://www.audiogon.com/cgi-bin/cls.pl?spkrmoni&1309611046&/Dynaudio-C1-maple--pristine
Dynaudio Contour S1.4
Cheaper alternative to the C1
http://www.audiogon.com/cgi-bin/cls.pl?spkrmoni&1307511192&/Dynaudio-Contour-S1.4-cherry-m
I have not heard the Usher Mini Dancer II but they are also getting very good reviews and look very nice.