I have been hiking in my Keen Mid-Gypsum boots every weekend for the past 3 months and have no complaints at all.  I wear a 12.5 dress shoe, and thought hard about wheather a 13 would be the ticket.  Got burned once buying 13's which ended up being to small, so I decided to go for size 14 and they fit perfectly with a pair of good & thick hiking socks.  And, literally no break-in required - felt great right out of the box, and still do.

The Mid-Gypsum's provide excellent ankle support and the wide sole and cleat design contribute to great balance and traction on all of the terrain I've been hiking here in mid-Michigan.  These boots keep my feet totally warm, and while I haven't had them really soaked yet, I have worn them in the rain a number of times and have yet to feel any wetness inside the boot.

I really like the lace system - the single speed-lace loops at the top of the boot makes a lot of sense to me (makes getting my boots on climbing out of my single man tent in the middle of the night very easy) and these boots are super easy to get off and on, practically like a well-worn pair of bedroom slippers.

I highly recommend the Keen Mid-Gypsum hiking boots.