hi i have a cheap oem humbucker that i converted from a 2 wire humbucker to a 4 conductor i want to know what type of magnets people like and why right now it has a ceramic i'm trying to decide what kind of alnico to get i'm in to classic rock and some hard rock like guns n roses acdc i have no experiance modding pickups so i thought i'd start with easy ones what type do you recommend and why thanks-andrew