I have recently discovered Danskos and Sanitas, and pretty much like them.  Sizing is inconsistent, though.  I have ordered several pairs of Dansko closed-back clogs in the same size and most of them fit essentially the same.  I purchased these in Black Tooled.  They are HUGE--they are the only close-backed clogs I wear with heavy socks (most of my other closed-back clogs I wear with light-weight socks or trouser socks).  They are otherwise comfortable, and I like the design, but without heavy socks, they would fall off.

(Oddly, the Dansko "Sonya" backless clogs, which I purchased in Brown Tooled, are one size SMALLER and they fit perfectly--I took them out of the box and wore them to a weekend retreat.  When I tried on the Black Tooled closed-back clog one size smaller at REI, they were too small in every way.)