Looking to upgrade my towers

Can anyone weigh in on the performance of kef floorstanders? Specifically the Q55's? I'm stuck between psb image 5t's, paradigm reference studio 60's, and wharfedale diamond 10.7's 10.5's or 9.6's. Too many choices and not enough rooms for all of these lol. Any feedback is and has been greatly appreciated! 

Bob and everybody else who's weighed in on this, thanks for the numerous new options and things to think about with my future purchase. With a little luck and alot of money I might just find something that I'm happy listening to. Take care everyone, maybe I'll update when I've made my decision. Thanks

Sorry to be so late in chiming in; seems nothing has been mentioned about your general set up. What is the size of your audio/video room? How far from the forward wall are the tower/front surround speakers, how far from the side walls, how far apart and how far from the speakers is your viewing/listening area? These are all details that need to be addressed and tweaked in order to get the most out of any audi system. 
In my video system I have a set of a set PSB Stratus Goldis as my front surounds/stereo mains. When set up properly (at least 3' from front walls, 2' from side walls and 6' - 8' apart)  with good components and proper room treatments, they sound very good. In my video room, because of room and wife restrictions they can't be set up nearly so well and while they sound great in my surround sound video, in stereo audio mode they don't sound nearly as nice as they can. This system is ok for casual listening when streaming Pandora etc but for serious listening, I'm very lucky to have a separate and adequate space, available and set up just for audio.
The best speakers and components would sound disappointing if not properly set up. If your room and wife will permit, you may have to make some placement and set up adjustments to get the sound you're hoping  for
Best of luck,
Jim 

Its a finished basement for the most part except for the floor. Just a remnant down in the middle. It measures 18x19 with 7' ceiling. I believe the fronts are 8-10' apart about 6" from the back wall and 5' or so from the side walls. They just can't do what's expected of them. Time to upgrade and whether or not i did i will soon find out. If the original set I was set to buy didn't fall through theres no doubt it would have been a major improvement. Time will tell and I know I'll be trading these in soon enough once things steady out and allow money to go towards that. Thanks