I still own a pair of Polk Monitor 10B's and a pair of Monitor 4's I've lent to my brother in law.
He bought a center channel and a sub and now is all Polk in his home theater and very happy.
I have a pair of AR 94's that need new surrounds on the (4) woofers. I don't know how successful they would be now but at least one person on the net likes 'em:
This thread has confirmed my impression that there is a lot of classic Klipsch, Infinity and Polk stuff out there.