I tried Danskos at home for a week before returning them; as many have said here, I found them too hard, extremely heavy, and loose (I have narrow feet to start with and hate that feeling of walking out of my shoes). Then I tried Merrells but didn't get the arch support I needed. I ended up with Alegria open-backed T-strap clogs; I have had great luck with them. They do make my feet sweat, but even the open-backed clog stays on because the inside is leather and "sticks" to my socks just enough. My feet did not hurt at all at the end of an 8-hour shift, which is saying something! They have a nice arch support without being too hard.
All that said, I know a LOT of nurses who have good luck with Danskos; others have recommended Klogs, Sanitas, even those Skechers Shape-Ups! Try on lots of shoes in a GOOD shoe store; even if you don't buy them there, you need to try on shoes and walk around. Walk quickly, slowly, jog as if you're running to a patient's room, stand in one place, etc. Think about how much support you like--I was able to tell the salesman that I can't wear Birkenstocks at all because the support is too extreme, and he showed me the Alegrias as an alternative.
You could also try sneakers; I had a sneaker-style shoe in school (had to be white) and had no problems, but I prefer a clog that can be wiped off easily.