I wish I was Frank - I'd have retired long ago!
There's quite a difference between XT and CM's to the KEF T series - if you want high quality music (as good as the T's are), you'll need to be looking at more conventional hi-fi speakers.
Similarly priced, have a look at monitor Audio's GX series. If you look at the GX200's, GXC150, and GXFX. I haven't heard the whole package yet as models are coming through in bits and bobs, but the GX200's we have are really starting to sing now, and are far better than I expected. With the amount of detail they have, they should work very well with movies too. The GX200's are quite slim, probably about the same as the XT's and CM8's, but will be a little deeper - cabinet volume is important to loudspeakers that use small drive units. Musically, there really isn't anything smaller that's going to match up to the likes of the CM8's and GX200's, unless you look at the likes of the PMC Fact 8's, but they're even deeper. The best suggestion I can come up with would be to have a look at the Monitor Audio Apex system.