I've recently been thinking about 7 string guitars. Now that I've just bought my Avalon I'm in no position to splash out (My wife would almost certainly sell me into slavery at best...)
The Idea seems intriguing to me, Wikipeadia claims the acoustics are generally tuned to an open G chord so we have D G B D G B D while the modern 7 string electrics are tuned like a six but with a low B or C.
Has anyone ever had any experience with 7 strings? What do they sound like and are they harder to play than the regular sixes?