I have heard the Kef Blade 2 on numerous occasions in different rooms with various amplifications, and must say they are extraordinarily good-sounding speakers. When I directly compared them against Kii Three BXT, I found the Blade's to be smoother and more refined from the midrange and up making it sound sweeter and more relaxed at loud spl. Below 250 hz it's no contest as the BXT is just mind boggling.
I'm not so sure the Blade is better than the Reference series even though Kef would like you to think so. The Reference series isn't a point coincident source like the Blade, but the off-axis response is smoother. I haven't compared them side by side, but I've heard some highly experienced people say that they find the Reference series more fun and entertaining, whatever that means. To me they sound about the same even though the Blade is far more expensive with more fancy drivers and enclosure. Which, of course, means that I find the Blade to be too expensive for the level of performance they provide.
Disregarding anecdotal impressions, my opinion in your case is that any such expensive speaker will be wasted in a listening environment like that. For the same amount (or less) you would get far more performance with cheaper speakers, a few subwoofers, dsp and some dedicated acoustical treatment for first reflections. Whether that would be the Revels or something much cheaper isn't for me to say, but I'd start with good-measuring cheap active speakers, multi-channel dsp like a MiniDsp and a few woofers to get a feel for what level of performance you're likely to get in your living room. Here's the issues I can see;
- Close proximity to back wall will lead to bass problems and uncomfortable levels of first reflection sound power.
- Close proximity to glass wall on one side and a more open space on the other side will lead to a shift in stereo imaging towards the glass wall as well as a "hard" sound due to uneven frequency dependent reflections.
- Speaker in a corner will make the bass situation worse and will overpower the inherent clarity of quality speakers.
I can relate to your room because my listening room is very much alike, and I can present you with a lot of measurements to show the inherent problems in such an environment as well as the effect of acoustical treatments and dsp to counter it. While it's hypothetically never a bad idea to get as good speakers as one can, there's a point where better speakers becomes irrelevant to the overall sound quality in a given environment.
In this case I'd say that this point comes quite early in the price range of quality speakers and therefore you'd be better off fixing the worst of the room problems with other means instead of throwing more money at the problem.
