I read a lot of the other reviews and was a bit leery about buying these but I've owned several pairs of Rocky boots so I decided to have faith.  So far they have been really good.  I've had them for about 3 weeks now and I wear them 5 days a week, 8 hrs a day as a police officer.  The first day was a little rough.  There is definitely a break-in period but I noticed a major difference by the second day and now they are very comfortable.  As for the complaints about the zipper flap tearing off, mine is still on and shows no signs of any problems, however, I don't use it as a boot strap either.  One look at the zipper flap and you can see that if you are pulling on the boots while holding onto the flap, it will tear off eventually.  That leads me to my only minor complaint.  I wish the boots had a pull-on strap in the rear.  It would useful.  Otherwise, good, thick zipper, the soles aren't coming off, and they're pretty comfortable after the short break-in period.