Daryl this thread isnt about PMC or Bryston so why have you brought it up? I will be interested to hear however which amps you think suit PMC better than bryston. All speakers have character it is unavoidable but some have less than others. Horns have more than most even the good designs that I like such as the avantgarde duos. I dont recall claiming PMC or Bryston are the best - they are simply the best for me from what I have heard so far. Which is quite a lot. 

I experimented with toe-in and rear and side wall placement. As the PMCs are very directional the side wall isnt so much of a problem. The listening position and optimal angle of each speaker with the listener are also constraints and seem to take precedence. Obviously in an even larger room with room treatments (sometime late this year...). I can get the best of all possible worlds.

As regards high end turntables I have heard literally dozens. I too come from a rigourous technical background and I know how to appy sound methodology to make my choices. Contrary to bubs day dreams I have also owned and setup an sme V.