B&W DM6, any good compared to speakers today?


I have an opportunity to pick up a vintage pair of B&W DM6's in great shape. How do they compare to todays speakers? I will be driving them with a Fisher 500C. I currently am using Kirksaeter 60's and some vintage AR 91's in my systems.
joeatlas
I have a pair of DM6 speakers in very good shape (could almost say excellent shape), but I won't. Want to sell them but do not know what they are going for. Any suggestions?
I have a pair of DM6 speakers since 1978. They are in good condition and still sound good with two Naim 250 power amps. I am looking to upgrade an old Naim preamp to the Townshend Enigma passive preamp and power source. 
Before any upgrade I would advise recapping the DM6s, after the capa are over 40yrs old now. I just replaced the caps in mine and honestly the upgrade bug is gone, a great set of speakers just moved into the "amazing" bracket. Well worth the expense and effort.