Hello "vmocken" and welcome!
I'm a brand new D66 owner, purchased on Reverb a month or so ago. The guitar needed a little fretwork and set up, and I replaced the tuners, which I didn't care for.
I've been playing it like crazy ever since I got it back.
It might be the best sounding Guild I own.
This will sound like heresy to folks who know some of the Guilds in my stable, which include such stellar models as a DV72, a JV72, a GV70, a D50 with Brazilian rosewood back, and more.
The D66 is slightly louder than any of the others. I know "loud" doesn't necessarily equal "good," but it has all the fine tonal qualities of the DV72, and a shade more oomph.
I'm more than a little blown away!
The price was great and the seller even rebated me 100+ bucks to cover the cost of the fretwork needed.
I think it's my new "A" guitar.
Glenn