MA said:
Keeping it simple then. Platinum or KEF?
I get the feeling that you want somebody knowledgeable to tell you what to do. The problem is, that anyone who is worth listening to, won't do this. The three dealers that have replied all know their stuff, and are all encouraging you to go and listen.
If you are asking me what I would do if I was in your position, then it would be as follows:
Anthem D2V processor + Bryston amps (bi or tri amping..especially centre)/Arcam P777 if on a tighter budget.
Kef Ref 205/2 (Front L&R)
Kef Ref 204/2c (centre)
Kef Ref 201/2 (rear...especially if was heading towards 7.1 as would add more 201/2)
Kef Ref 209 (sub)....only need one, or you could have a visit from the bomb squad!
There has been a lot of talk about the sound. What about the picture...TV or projector or both? Which Blu-Ray player and in what form does your music take?
Also allow enough for installation, cabling, speaker stands where appropriate, acoustic treatment if necessary, and rack.