You like UGG? You don't like the lack of support.  They are "hikers" version of an Ugg classic short (of which I have 6 pairs) They are light as a cloud, but have great support, especially the ankle area.  Montara don't need break in time, however, I found that after 2 hikes, they were even more perfect. I have worn my ugg on light hikes, with an orthotic, but was constantly in fear of damaging the beautiful suede. These are my second pair of Ahnu Montara, as I'm fearful they might be discontinued.  For you gals, they are also fashionable, especially with sports tights.  The don't look clunky or make my feet look wide as so many other hiking boots.  I have the light purple and the red.  Spray some weatherproofing (even if they are waterproof) every 6 months or so.  That will keep the "suede" fresh and stain resistant.
Montara were worn 8 hours easily, and not even removed when at home.  I sometimes forgot I had them on in the evening.

They are true to size. Size 7 will fit size 7 and you can put in a replaceable orthotic (I don't need it) if you want an "odor free" Dr. Scholl's foot pillow so they don't smell after a hike.