I am very pleased with my Dansko clogs. They are a bit pricey, and I hate getting blood on them because they aren't easy to wash, but they are sooo much more comfortable then any other shoe that I've ever worn. I can stand all day in them and be relatively comfortable.
try some clogs from Merrell. you can get them almost anywhere...Neimans, Saks, maybe foley's or dillard's. they usually run about $70. i think there are great. you can also get them online too. just do a search for merrell on google.
I love my NB sneakers. While they may not have the washability of rubber clogs, they are comfy and durable (and don't make me look like I've joined the "cult" of clog wearers. )
You will/can get a million replies to this question - what's comfortable for you may not be for someone else. The best way to find out is to try out several types and see which feels the best. If someone will let you, borrow a pair of clogs for the day and see what you think...if they're for you, get a pair. If not, keep looking.