Here's a guitar that I test played for a long time once I got the tuning issues sorted out.  It was a lot of fun and sounded great.  Like many Bigbsy Gretschs, tuning issues can drive you nuts (and this one was tricky for me).  The headstock has a wide splay so the strings break fairly hard outward at the nut.  Many tuning issues can be sorted out by properly cutting the synthetic nut, or better yet swap it out for nice hard bone.  The trick is to minimize any friction points so the strings return to pitch.