I think I'm finally going to bite the bullet, sell my SB4000 and get a chambered model (they weren't available when I ordered). Since I use it constantly for recording, but never for practice or gigging because of the weight. Also I've figured out which features I really like (active electronics, SS frets) and which I don't really need to bother with next time (Hipshot detuner). I could just keep the one I have and get another, but I know I'll end up using the heavier one less or never, so I might as well let it go. If anyone here is interested I'll gladly give you first dibs, trying to figure out a reasonable asking price before I put it in the classifieds.