I heavily considering purchasing an Aftermath for my Les Paul.... how do you like it? Sorry that I can't offer any advice for your question.
It's a great pickup. It's quite dry (but not in a bad way). It kind of eats up your distortion, so you can have ya gain on full, but still regain perfect clarity.
The only players who will not like this pickup are players who have bad technique, use thinner strings, or use bendy picks. The reason I say this is because the Aftermath tracks soo precise, players who like to use thinner strings and picks, just to make it easier to tremelo pick, will have a nasty shock. When you use the right guage for your tuning and a nice sturdy pick, the pickup will sound very articulate, and if your technique is not so good to begin with, it will teach you to really play precise.
Other than that, it sounds heavy, perfect for all types of metal - sounds best downtuned. And has a very full lead sound, which is strange for a Ceramic pickup. This may be due to the increased mids.