The Custom is a similar wind. For crunch and attack, I'd rather see you stay with the double row of short allen wrench pole pieces. So if you wanted to step it up a little, you could swap the Full Shred's Alnico 5 magnet for a Ceramic, and you'd basically have a Custom, but with more crunch and attack. If you didn't like it, then you'd know that you wouldn't have liked the Custom either, so you go back to the original A5 magnet in the Full Shred and leave it alone.