Re: JB vs Custom vs Custom 5
In basswood I'd avoid the JB, particularly if it's got a floating vibrato.
If your basswood guitar has particularly deep & tight bass, go right ahead, the JB will rock.
Either of the others should do OK, depending on taste. If you don't mind loose bass, even the JB may work, but be warned it may turn out with a pronounced upper mid honk in that sort of guitar that a lot of people find very hard to work with. I love mine for leads, can't stand it for cleans or thrash rhythm.
Which is why I'm going for the PATB-1. (Though I ALSO want a PATB-2...)