I personally have never had Marina, but I have had Marshal. I think Marina is cuter, but according to your signature, you have a bunch of normal villagers. So a smug like Marshal would probably give more interesting dialogue. c:
Marshal is cute, and so is Marina. It really doesn't matter, they are both very lovable villagers. I've had both before (Marina moved in today, actually, from a random plot) and I love both of them.
I have Marshal and Marina in the same town and if I had to choose between them I'd take Marshal.There's a lot of really good normal villagers but not very many really good smugs.
I love both of them, so it is so hard to choose. I personally think they are equally cute and adorable, but if I HAD to choose I would probably pick Marshal. ... Why not just take both...
Marina is cute, but...the octupuses kind of gross me out with their mouths. She's pink, and I like the way she walks. But no, I have to go with Marshal. He is def a far far cuter and better designed villager.