I ordered a new main sail for our Pacific Seacraft 34 from Precision Sails in early August and received the sail just a few days ago. The sail seems to be well made and of similar quality as the old sail (Ulman's). I tried it out for the first time today - the sail fits very nicely - the tack may be a tad low, but nothing a small shackle won't fix. The sail performed very well and we were able to point higher than with the old sail.
The ordering process was similar that what has been described before. It took them a couple of days to send the form for the measurements - I had to call them for that - but things went very smoothly afterwards.
I would definitely use them again - once the time comes to replace the genoa, I will likely order it from them. They're good sails at very good prices.