I have about 8 pairs of Dansko's, and I recommend them to absolutely
everybody I see!  They have an excellent arch, and you can literally
wear them ALL day with no discomfort--even the boots.
  Be aware that the sizing is European, but a sizing table is here
on the site. For the closed-back clogs, a proper fit is one in which your
little finger can fit in the back of the shoe so that your heel can comfortably
slip up and down, but not so much that the shoe falls off. Personally, I
wear a size 7.5, which translates to a 37. A few of my pairs are 38, but
that's just because 37's weren't in stock at the time. Still a good fit,
with bulky socks.  All of these recommendations go for the clogs.
  I particularly love this pattern because I am a knitter, and get com-
pliments everywhere I wear this pair. My sister and I just ordered
this second pair for our mom, also a knitter, 'cos she literally doesn't
stop talking about how pretty these are when I wear mine.
  Once you start wearing Dansko's, you will be hooked and you too
will start collecting colors and patterns to match your outfits. Dress
them up or down, to work or with jeans, they are funky in the best
sense of the word!!!