As no-one else seems to have expressed an opinion I'll throw my 2 cents worth in...
I heard a pair of PMC OB1's at the last Bristol show, using Bryston amps, a TEAC P-70 transport and a Prism DA-2 DAC. I really liked this system, and it was a toss up for me on the day whether this or the one using Wilson Benesch ACT3 speakers was my favourite. From my limited experience I couldn't fault the PMCs at all, and remember being particularly impressed with the realism of a piano in one piece. Bass was good; not boomy at all. Worth a demo IMMHO.