No one has mentioned the Washburn Rover travel guitar.They are compact inexpensive,made of all solid wood, come with a tough travel case and have surprising volume for their size. The tone sounds a little bit like a ukelele, I guess because the body is so tiny, but the overall tone/sustain is still quite good. They also have good access to the upper frets and play almost like an electric. Worth checking out for a travel guitar, although it won't likely replace your full size guitar at home