I’ve had sandbergs and they are superb instruments, especially the build quality, I had a custom one made too which was very nice, mine all setup with a really low action and lovely necks and a great sound , I would say the only reason I didn’t totally gel with them was because I always reverted back to my fenders, nothing to do with the basses themselves, it’s just me, I was tempted by the Ida Nielsen signature but I don’t think I’d stick with it