I had a Freshwater OM, I think it was a 2001 model, so I don't know how it compares to current models. I was very happy with it and thought it was an excellent buy for the money, although the exchange rate was more favorable then than it is now. I sold it here at the Cafe and the new owner was very happy with it too.
I do not think my Freshwater was quiet but it did not have the booming volume of my Crump, which is really loud. The Freshwater was built like a tank, very solid and heavy. No worries taking it to a pub gig. The neck was also very wide, though I assume David could make it narrower if you specify that. I thought the tone was very good -- what I think of as a very prototypical Celtic OM sound. The Freshwater also had a nice electronics system, and it sounded really good plugged in. It was certainly a fun experience dealing with David. Be forewarned that he's not the best at estimating an accurate delivery date.
I've also sampled Petersens regularly because Gryphon, which is near me, retails them. I'm a big fan of Petersens -- they are also a great value for the money. Honestly, if you're looking for an upgrade from the Petersen, Freshwater will not provide it. They have different qualities, but they are pretty equivalent in value.
Arches F4 / Newson F5
Crump B1 / Old Wave GOM