Anyway, I had JB's in a Les Paul in the 80's. It's was what was in the LP when I got it (I had a '69 Deluxe so obviously modified before I bought it). I hated them. I just never got the fullness I craved from that pick up. I think it really is a mix of the 'type' of tone you look for and if the pick up and guitar wood combination meets that need.
I remember when I got the big chunky tone I craved in the 80's and it was with a Kramer Beretta with an EMG 89 in it. Go figure.