i work in construction environments and also the customer service biz (in and out of people's house's).
And so far i have had:
2 pairs of 8"Redwing Dynaforce. Not the most comfortable boots, but not really too uncomfortable. They both lasted about 2 years each.
A pair of Timberland Pro Titans i think they were called. The most comfortable so far, but lasted about 8 months before the sole split apart on me. Not off the boot, but from the out and midsole.
Then the ones i have now that I'm not digging are a pair of Georgia Boots. Wellington style, non insulated, slip ons, and no cusion pretty much. It was one of their cheapest ones, but will come in handy as a pair of clean/dry back up boots.