I use a Martin dreadnaught DX which has been beaten to hell and i don't like it much, but a new one or used (taken care of) can sound good especially for beginners like me. However I recently got a Taylor CE-14 (blck) which sounds like the sweetest thing i've ever heard and i love it. I think you can get a more plain version of it that sounds just as nice without all the silly pearl inlays which i usually refer to as "pointless shiny stuff"