I've tried a BB1024 and was impressed, it easily compares with a Lakland Skyline or Musicman for build quality and sound quality. The BB2024x and BB2025x that I have are sublime, top end instruments that feel, look and play like the £2k+ instruments they are. They are very special and I'm impressed with them every day (I've had them about two years and in that tim ( )have found nothing that I have lusted over as much. They chime and breathe and feel absolutely right. I have a PRS C22 guitar which is an exceptionally good example of that make/model and both Yams are a step above that in all respects. If anyone has any doubts about the 2025x's B-string I can confirm that it is as good as any 34" scale low B I have ever tried.
Negatives? Yes, I suppose. Single coil hum but this doesn't bother me. Anything else? Uh, not for me but some people baulk at paying £2k for an instrument that is easily mistaken by Joe Public for a mid-range bass. But then again these people that baulk probably wouldn't buy a Sadowsky because it looks like a Fender copy. I love my BBs and think they are worth every penny. I did some sound clips on one of the Yamaha threads and the modern Super BBs just wet all over the other cheaper BBs I have. Unfortunately for a full comparison, you would have to feel them, play them and live with them; I'd put them up against any custom made luthier instrument of similar construction.