Rainsong
Stealth
There are companies currently marketing guitars made of various wood-based (but not wood) and non-wood composites. I bought a Stealth to check out the technology. It's as heavy, depending on individual wood, as any LP, resonant, sustains well, tone is on a par with any comparable priced guitar, but I suspect this is the best this technology can do, because if they COULD make a $10,000 guitar they WOULD. Since they don't make one, I don't believe they can - or at least that it wouldn't compare in any worthwhile fashion at that level. It's made of some dry, compressed granular stuff that looks like little styrofoam pellets that are very very tiny and sort of hard. I don't know how to describe it. It's like grains of salt when you scrape at it. You can feel the stuff smush together into a bigger clump, so there's no apparent problem transferring sound from bit to bit. It vibrates against your stomach and in your hands as much as any other guitar. Eh, I have better guitars and so it sits in a box, because who would buy a used one?