I play thrash/black metal, and am looking to replace my current p/j pups. I came extremely close to buying EMG's...like almost hitting 'send order' but I decided to run it by you guys first. Would there be anything else out there that has a better 'growl' factor? Also, I recall hearing something about 'stacked humbuckers', isn't that a humbucker stacked so it fits like a J pup? So I could replace the P pickup and then get a stacked humbucker for the J slot, right? Any recommendations for this? The only company I know who makes these are Carvin. Thanks.