There is a thread about the set-neck ones somewhere already.
Uwe has a Reverend and I used to have a Reverend. I had a maple neck JJ which was made very good, it sounded good and it was quite light. Those old Rumblefishes were a bit Danelectro-ish if you're talking about the body. It sounded very Fender-ish with a touch of hollowbody warmth.