i have the galliera and mono artsy. its so hard to choose since i love them both. the galliera is definitely more comfortable at first bc of the flat straps. they are about the same size, galliera is a tiny bit shorter and not as wide but still holds a lot. you can't go wrong with either and if you can you should get both
I have two Galliera PM's and a Empreinte Artsy MM. I think Galliera is one of the most comfortable shoulder bags LV has ever made. The bag is also very light weight and fits all the essentials. I usually carry my Artsy on the crook of my arm. I don't think it really is a shoulder bag. My Empreinte Artsy is also quite heavy even when it's empty (of course because it's a full leather bag) compared to my Galliera. I do love both bags. I think it's just a question of what you're looking for.. The Galliera PM is also quite a lot smaller than the MM Artsy and some people don't like the shiny Inventeur plate on the Galliera. With Artsy you wouldn't have to worry about that. If I could get only one of the two I'd get the Empreinte Artsy just because the bag is simply stunning and very worry free because of the leather. But if you're looking for a bag in Mono, then I'd go for the Galliera.
okay, now i'm curious, why do you have TWO galliera PM's?? you have my dream bags, btw.
I have one in azur and one in mono. I just love the style!