From what I've heard, the Mule balances well with the MM (mine's in the post), and can you can really dig in to get the tones you want. Gorgeous cleans coupled with a nice, fat crunch, should you want it, and there are loads of clips you can listen to.
The MM isn't as nice when clean as the Mule, and if you're going to use the neck to play cleaner parts, then I wouldn't suggest it. We do really need you to say what sound you're really looking for to make an accurate suggestion. Bands, players, etc. Otherwise, the Mule would be a safe, yet ridiculously good bet.