Experience going from Morrow MA-1 to MA-3?

Interested in hearing from anyone with recent experience going from Morrow Audio's MA-1 to MA-3 interconnect. Have MA-1s now. Curious what benefits you heard. Have searched here and read "you get more" as you move up in the line. Is MA-2 or MA-3 the better option? Looking at their trade up program. It's definitely affordable.
I've been trying some different kinds of music, and old stuff from Ella Fitzgerald to Bob Dylan, and that extra detail really makes it enjoyable. It makes me want to upgrade the speaker cables now, but I need winter tires!