I’ve got the newer Marcus Limited and I’ve owned several Little Marks in the past.
The EQ on the Marcus models is far better. No silly big gaps in it and the low end is far better controlled.
I sold all my LMs, and I’m keeping the Marcus. It’s a great amp, and very punchy indeed. I’m playing big band jazz and funk with it at the moment, with a smattering of old school rock (Queen / ELO etc)