I have both the MM and the AM and have had them both in the same guitar. To my ears, the AM has a tighter bottom end, more aggressive high mids, more crunch overall than the MM. The MM has a fatter bottom end and low mids, smoother top end and high mids. Neither sounded even remotely scooped (because I turn the mids up on my amp), and if I wasn't after the absolutely tightest pickup I could lay my hands on, I would still be using the MM very happily. If you fancy something a (little) bit different, give it a go! :)