OP - Want to chime in for the KEFs. I own a pair of KEF LS50 Metas, and although I have not heard your current Q100s, I had the original LS50s previously. The Metas are an amazing speaker, not just for the imaging, and are a worthwhile upgrade for v1 LS50 owners. They do so many things well, and do basically nothing poorly. IMO, it’s not ridiculous when audiophiles pair the Metas with $100k+ of front end gear - they are that good. Are there better speakers? Of course...
However, there are some caveats. I would not suggest them with your current amp. The Metas will need more power, and honestly a better quality amp, to sound their best. They are highly transparent, which means that they will not gloss over any flaws up (down?) the chain. Worded differently, they will expose the sound quality/signature of everything before them. If something else isn’t neutral, they’ll let you know.
However, there are some caveats. I would not suggest them with your current amp. The Metas will need more power, and honestly a better quality amp, to sound their best. They are highly transparent, which means that they will not gloss over any flaws up (down?) the chain. Worded differently, they will expose the sound quality/signature of everything before them. If something else isn’t neutral, they’ll let you know.