I have black neo cabby in pm size and I love it, use it everyday, very practical bag (very easy to get in and out), low maintenance). The other day, I was in LV shop and tried on the marina pm (thinking about getting it) but it's a little bit harder when I tried to get in and out while one handle hanging in my shoulder (as I normally do with my cabby) and I'm not sure with the bag in light color so I didn't get it.
It's just my opinion but I hope you can decide which one you want!!!Good luck!!!