Mick et al are speaking the truth. If you've got 5-700 bucks you can find a used Guild. (might have belonged to me a few years ago) I've had every brand known to humans and what I use now (a 12 year old Takimine) is pretty darn good, and if it gets stolen..well at least it isn't my wonderful vintage harmony (which is also out there. For some reason used Martin 12s have not kept their value (although they're decent instruments) and can be found for about 7-800)
As far as new instruments, I'd reccomend Larrivee (at about 1200 yankee) or Taylor (bout the same).
Good pickin'
rick