I haven't done direct A/Bs, and I have not heard PMCs in my room, but I did demo the FB1i last summer before settling on going with Salk. The FB1i sounds a bit leaner in the bass, though it was about as extended as the Salks. The PMC's mids and highs were not as clean or detailed as Salks, though. I currently use Supercharged SongTowers rather than the HT1-TLs, but the models probably sound quite similar.
And though not a sound quality item, the PMCs look nice, but the Salks look nicer.