I've been buying Keen Targhee II Mids for years now, and I've come to the realization they're a mediocre boot at best.  They used to have a little better fit.  I wear them 12-13 hours a day 4 days a week for work.  They don't hurt my feet and provide ok support.  I don't have any major foot issues though.  The thing I've come to realize is that they're just not worth the high price, which is why I buy whatever color is on sale.  They're not goretex so my feet are hot and sweat in them.  They're not waterproof.  They're not made in the USA.  This pair will be my last.