OK, some responses to the very hepful posts above.
None of those models at Retro really excites me RS, unfortunately. The R33s are listed at £499 in a 2004 review by Paul Messenger and, although he is very positive about them, he does suggest that they lack body with cellos and the like. The same appears to be an issue with the ProAc Tablettes. These speakers are not going to be able to reproduce piano accurately at all. Linn Kans are not the easiest load and I'd almost certainly have to buy a power amp sooner rather than later.
The Regas are good speakers but I'm not convinced they are worth the extra over the KEFs particularly as the last couple of times I heard them they lacked composure and sounded very aggressive (although much of this will be down to the Brio 3 amp).
I think I have to accept that at whatever price point I'm buying I am always going to be very fussy and like a very particular sound. The trouble is I can only identify it when I hear it. I honestly thought some of the expensive, highly praised stuff at the show on Sunday sounded truly awful. I wasn't at all impressed with the Dynaudio, ProAc, PMC, MA, or Naim speakers I heard there and preferred the Focals, Vienna Acoustics, Audiovectors, KEFs and Dalis by far, even though they were on the whole cheaper. To be honest I wasn't wholly taken with the Spendor A5s either and thought the Vienna Acoustics Mozart Grand and Beethoven Grand models outclassed them. The same applied to the electronics. The only ones that really stood out to me were the Arcam A38/CD37 pairing, the new Quad set-up, and the T+A streaming unit. I thought the Chord electronics were edgy, brash and lacking in depth and the Naim stuff just sounded clumsy and messy.
I am sure my amp can give even more than the KEFs will show but I also know that the pairing will be showing the KEFs at their very, very best whereas if I make a worthwhile enough upgrade (which to me would be something of the VA Haydn stature) I will then have to look at upgrading the amp again. I need a period of stability and feel that this set-up can give me that whilst I divert my attention to getting a turntable that I can really enjoy. On that note, the Systemdeks are VERY high on my list and any turntable purchase whether it is one of these, a Linn or a Thorens, will certainly be second hand.