I have a 12th Fret bias: http://www.12fret.com/used/
I look overthere and there's a lot of nice guitars, did they are based in Canada? 'Cause I'm not into U.S. buying and shipping! Too long and cost a lot for nothing!Check out Guitar Adoptions. They have a small but very high-quality selection. Make sure you sign up for their mailing list. They have specials from time to time that involve some fairly steep discounts, and you'll only know about them if you're on the mailing list.