R2 I would assume being we're both in the "HVAC" field we'd be looking for about the same thing. I to get about a year outta a pair of boots also, walking 3-5 miles a day in them. I like the "patrol" style boot because they're so much more comfortable to walk in.
For the most parts these bates have been good, I guess I just saw the UA name and price and those oh I bet those are nice boots. From the reviews and UA's response to them they look like they stand behind their product. But it sounds like they need to work on durability instead of just sending out another pair of shitty boots