Floor standing speaker recommendations new or used, $10,000 and under


Hello I'm looking to some new speakers and I need some recommendations to audition.  I currently have the Nola Viper IIa, but I'm looking for improved bass and just an improvement in sound overall.

I have a Mcintosh mc7150 power amp and a De havilland Ultra verve 3 preamp.  My source is a musical fidelity cd player.

I have a medium sized room, approximately 20' by 16'. Ceiling is about 9ft high.

I've listened to the Focal Sopra 2. and the Totem Acoustic Hawk, but I'd like to expand my options.
hawk28
Egglestonworks Andra MK-I or MK-II 

15K new / 5-7K used

I'm looking at getting the pair in NJ....Full range for sure!
Steve59 - i have the predecessor to The Music - the Mahlers.  Pretty amazing.  Extraordinarily transparent.  Pretty darn full range, and effortless. Most speakers strain in dynamics land. These things (like the IRS or RS-1B noted above) just get loud.  In a very good way.
BTW i meant RS-1B, not Beta
I know it's a little above your budget but Magico A3 is a must listen before you make a purchase, incredibly musical and it boogies. Drivers are seamlessly integrated like point-source. Build quality is world class, all aircraft-grade aluminum cabinet, beryllium tweeter, and graphene mids and woofers. Good luck.
Golden Ear Triton Reference or Golden Ear Triton One.R s  ... Amazing bang for the buck ! 
10K....??.... you have quite a huge catalogue to look through.

 Happy hunting and have fun.

 I loved the hunt and demoing many speakers.

enjoy !