Just bought a Denon 2113 from Richer Sounds at a very good price and I too was deliberating between the KEF T 105/205s. Very happy with the Denon, though this is my first AV and therefore can'r really compare it, from a personal point of view.
I chose the T105s as the price at £699 was too good to miss. I am very happy with them in terms of their musicality and cinema surround sound.
Depends on your budget, I guess, but if you can afford the extra £4/500, whatever deal you can get, then go for the T205s. Either way the T series sound and look amazing.
I looked first at Kef, because I have some very nice Kef bookshelf speakers and thought they could be used in a 7:1 configuration but also as soon as I saw the T series I was hooked on their streamline appearance. Having set everything up I feel that I don't need a 7:1 set-up, to be fair and will use the bookshelf Kefs and the now redundant NAD, in another room.
Hope this helps.