This is great advice! I find that I personally prefer a to wear and least a little bit of a heel on my shoes - I find that I survive a long day on my feet much better when I am getting around with a little heel, rather than a completely flat shoe. My podiatrist agrees with this theory
If looking for a pair of comfy everyday shoes with a little heel, do visit shoeshow.com I purchased a pair of comfy shoes from them and I have worn them to death! They have an area on their website dedicated to comfy shoes.