I learned a lot during m-holes, probably more than with ket, I love the positive vibe and glow you have, while ket can bring you in a pretty dark cold place, extended duration also means I get more time to digest all those connections I'm seeing in the universe.
My last mxe trip was the night of the Scotland referendum, 130mgs oral, in bed, no music, no lights, airplane mask on, full on extra body experience, I was in a sort of room, reddish in colour, while various episodes from my life came to my eyes, and they all dotted together perfectly.
I'd say that as a psychedelic tool, MXE can outdo ket. Even though my first proper k-holes will always have a place in my heart.