I don't even understand what convenience they offer. I cook a lot and find stainless steel just as easy to clean. Let it sit with some water in it after you take out the food, and by the time dinner is done it wipes clean with a sponge.

At the same time I don't have to worry about nicking or overheating the teflon, and stainless steel pans tend to have better heft and thicker bottoms.