for everyday? among the four, i choose the Galliera.. i have both the Palermo GM (i find the PM tiny) and the Galliera PM..
the latter being the ideal size for everyday for me.. it is lightweight, hangs on the shoulder comfortably, and its patina gets more & more gorgeous as you use it..
Palmermo, zipper closure, multiple ways you can carry , lots of pockets and a little more dressy when you need a bag for that. Thats why I love mine. I have the Hampstead MM inn Damier and tend to carry it more for work functions or during the F/W months, the two straps can be annoying but the bag itself is very low maintenace and classy.