I am looking at either the Carvin B4 or LB70P. I want active electronics and a humbucker. Whats the main difference between the Tribute series and the regular G&L's? Is it like a Fender MIM and MIA sort of situation? All your help is appreciated. If you have any other bass suggests please give them. I will need to be playing everything from blues, R&b, rock, metal, and funk. This is why I need the active electronics. I am currently playing through an Ampeg B2 and Avatar 410.