Both great tyres, using both, still 26″ on my SB66. Baron a bit harder wearing and better in mud. MM great all rounder but prone to that breaking / tearing at the bottom of the lugs over time which is a bit annoying for an expensive tyre. Great on steep tech stuff, wet rock and roots.
I’m a little bit of a spinner so find them both a tad arduous over long distances, more than 15 miles, or on a climbing day I tend to swap them out for Bronson’s and for less tech or mudfest routes.
For tubeless MM’s go up a dream first time and stay rock hard, Baron’s need to be inflated and ridden to seal, use plenty of sealant when new.