Speaker upgrade


I am planning on upgrading my speakers. I have the following equipment:

B & W 802N speakers
Jeff Rowland M301 amps
Jeff Rowland Synergi IIi preamp
Wadia 270 SE tansport
Harmonix 777 DAC
Audio Magic Power conditioners

I listen to mostly female and male voaclists and older jazz. I am currently happy with the sound that I am getting but I have extra funds at this time and want to upgrade my speakers. My budget is around $10,000. I will sell the speakers after I sell the new ones and use that money to buy the Jeff Rowland 302 amp. What is out there that is a must audition speaker for a 15' x 30' listening sapce? Thanks again for any suggestions.
bryanhod
I have purchased a single DD-18 at this time. I will add this then think about a second to get the true stero effect.
Rauliruegas, do you suggest setting up the sub as a bi-amp method discussed by Velodyne?
ML Summits or ATC's Active 50's or above, are as good as I have ever heard. And I have heard many of the cost no object speakers.
I set up a dual sub system. First I tried a single DD-18. Great sub, too much for my room. Then went to dual DD-10s. Great sound but too much boom for my musical taste. I am thinking now of moving towards Avalon Eidolon Diamonds. I recently upgraded to Lamm M 1.2 reference amps which improved my base and sound staging.