Okay, I've got two top choices, based on my two years of nursing school and almost two years of nursing IRL.
My absolute first, hands-down, is New Balance. I know you said you can't wear these, but for others reading, they get a quadruple thumbs-up from me. Best shoes I've ever worn- wore holes in them from so much use. Feet were like walking on clouds.
My second choice, and recommendation for you to consider, is the Cherokee Rocker shoe you mentioned. I've been wearing these for about a year now, along with very thick insoles (I got them at Footaction; I have no idea what brand they are anymore, but they were about 30$ a pair), and my feet absolutely do not hurt. I'm not a skinny girl, mind you, and I not only have long feet (size 11! Ack!) but they're very picky.
The Rockers are slip-on's, slightly sneaker-styled, but are technically nursing shoes and look very neat and professional, IMO. They are a bit stiff at the lip (which breaks at the bend in your foot/ankle) at first, but it only took about two weeks of regular wear to break the leather down enough to where it was pliable. Just wear thick athletic socks for padding while you're breaking them in and you're set. The difference between the New Balance and the Rockers? Well, the NB tennis shoe sole is very flexible, and bends a lot when you walk, just like your foot does. This is a plus, because basically the shoe is soft and goes where your foot goes. The Rocker is much stiffer, and the sole is considerably less flexible, which at first I thought I was going to regret, but in fact, the shoe provides even MORE support than the New Balance by supporting your arch stiffly, rather than allowing your foot to contort as you walk. Does that make sense? Now, I am INFAMOUS for complaining about uncomfortable shoes, and would never recommend anything to others that I wouldn't swear by myself, and I would definitely recommend either of these shoes to anyone.
I tried Nursemates and my feet were practically bleeding (two different styles). I also tried Easy Spirits when I was in nursing school, and these were only okay. Not horrible, pretty comfortable, but my feet were still aching each day when I got home.
I went and bought a second pair of Rockers which I use for walking around the track with my husband and I just love them because my feet and calves don't ache like they do occasionally with some sneakers.
So that's my two cents.
Here's another two: I am not in favor of the clog or mule-type nursing shoes. I think they look unprofessional (unless you're in OR where you need autoclavable rubber shoes, which is a different story), and I have seen people at work running down the unit and have their shoe come flying off. Also, some clogs have slightly platform heels, and I've seen a coworker step down wrong, the platform twisted to the side, and she sprained her ankle rather badly. This happened to me with regular non-nursing out-of-the-workplace platform clogs once and I have never worn them again. It's not worth it! I still have a weak ankle that never healed right. Take care of your feets.
Okay, I am officially done typing now.