I think that Anal **** would be my favorite acoustic rock group. I further edit this post to learn from Chris' mistake and say that The Gathering used to be a good gothic metal band but they went acoustic. Might like them. Their first CD is metal, but after that I don't know what happened. Of course I prefer their first CD, but if you're asking for acoustic stuff then give their later stuff a looksee. No promises though, I've only heard a few tracks of their later stuff.