I actually like keeping them single. I depotted some of my e/s including the milani ones, but I love it in their pots. I have palettes, the 15 one, and I don't really like it.. I think I will get the small palettes from now on and keep the e/s in there.. 'cause I can easily see the colors through the transparent cover.
Plus, I love the pots 'cause they're just cute and easy to use..
Maybe that's also because I don't have my own dressing table. I live with my mom in-law so I use make up in the bathroom and I don't like to take the big palette with me. I like the little ones (4-well, pots), they're much simpler..