I wrote a review for the MM on Amazon, but in summary, the Top Boost makes everything sound weird and unmusical

The big "selling point" about the MM is that it has a Top Boost

Do not expect this to be a clean boost, though.

Comparing the Top Boost to the Noise Gate in terms of the big "selling point", the Fullbore's Noise Gate (which has adjustable sensitivity) to me seems like a MUCH better feature when thinking about how tight you want your rhythm guitar or leads to sound