I have the B-4Z, which I believe is the same bass with a different top (zebrawood). For me, it's perfect. It captures the exact tone I'm looking for, and the tone controls are quick and easy to work with. It plays great for me too, although if you're looking for ridiculously low action this might not work for you. But again, it goes as low I would ever realistically ask it to. Also keep in mind that this is a really thin-necked bass. I don't know about the two that you mentioned, but if you're used to a thick round neck it might be somewhat uncomfortable.
And, of course, it looks great.
The satin finish is flawless on my sample.