What your hearing is the difference between Alnico magnets (707) and ceramic (81-7). I bought a set of 81/85 for my 6 string Ibanez, and put the 81 in the bridge slot just because everyone else did. I hated it. So I switched the 85 to the bridge and holy shit what a world of difference. I just snagged a set of 707's for my S7320, and I cant wait to install them. I do have to say EMG going to a solderless system was both a great Idea and a horrible one, in the sense that it makes it difficult to mix and match older EMG stuff. Im also trying to find a wiring schematic for 81/85, single volume, 3 way blade and an EMG PA-2. Anyone know where to find that? EMG doesnt have it anywhere..