Oh, and if you really want the Arcam sound, as a future upgrade you could flog your Naim, and replace it with an FMJ power amp.
I had both the P25 and P35. Personally I preferred the P25 (and I had a very, very rare black one), which I felt had a more robust, solid sound and a build to match - the P35 seemed to have a less solid build (rapping your knuckles on the front plate and the casing is a good test!), and also had a transformer sensitive to noisy mains. To be fair, I haven't heard that's a common problem though, so either would be a great choice.
A perfect visual match with the AV9 was the icing on the cake!
I think the point of this post is to say always experiment with any old kit you may have stashed away before you upgrade your newest kit or splash out on shiny extra new things :). I took the Naim power amp out of the cupboard today and scratching around for a preamp for it, decided to hook it...