BEST SPEAKER THAT COMES TO LIFE AT LOW LISTENING LEVELS

My system is as follows:

1. Martin Logan 11A Impressions hybrid electrostatic speakers.
2. Bryston 4B3 cubed power amp 300 per channel into 8 and 500 into 4.
3. Bryston BP-19 preamp, Chord Qutest Dac & Lumin U2 mini stream.
4. SVS subs-pair of SB-4000
5. I listen at 55-60 dbs. Can anybody recommend a speaker with a budget of $15,000.00 per pair that sounds alive and dynamic at low listening levels. My dealer sells, Totem, Triangle and Proac.
6. Any recommendations would be appreciated. Due to age and ear issues I can listen comfortably at 55-60 dbs and not much louder. 
7. Thanks in advance for any help that you can provide.