Speaker upgrade around 100k retail

My choice is either a used half price pair of Von Schweikert Ultra 9s (I've heard the Ultra 11s-1/2 the size, perfect for your room) or 55 Aktive Ultras.  

AudioMachina makes an active array that is unlike anything I have ever heard. External amplifiers of a completely unique design make this system completely unlike any system in existence. Only speaker to correctly handle amplitude vs. time (key to this are the amps I believe). Mounts in corners and significantly reduces the need for room treatments. 

Ascendo out of Germany makes a Model M speaker that was superb in its earlier iterations and has no doubt been improved. Rockports are always excellent.

A problem you face with large high end dynamic designs is the physical size of the cabinet. I always void mirror image designs with a woofer and midrange which is above a center tweeter/tweeters. Lansche is always a contender. 

Simple fact is that a crossover is a real problem and this component intrinsically limits any design which uses one. 

Wonderful problem and one you could easily and happily spend researching/listening over the next year or more.  All of the suggestions made by the other fellow audiophiles are truly worthy of your time but add the Wilson Audio Alexx’s to your list.  They have received excellent reviews and Micheal Fremer uses them in his system.  The Alexx’s cover all of the audiophile bases with all types of music and personally I find them to be very musically satisfying.  

What do you mean by void mirror image designs?  If you mean avoid, the Lansche looks like a mirror image (top and bottom) around a central tweeter.

One of my All time favorites MBL 101 Radiostrahlers, please excuse the spelling ,if you heard the speakers you know MBL
makes excellent products.