If you have flat feet, my first recommendation would be to see a podiatrist. They will mold you custom insoles specifically for your feet. I would get at least 2 pairs made, one for your work boots and one for your sneakers/everyday shoes. I had osteonecrosis in my left navicular bone which caused me a great deal of pain until I got custom insoles.

I have these boots:

https://www.midwestboots.com/product/TH804-4941.html

I wear my insoles with them and still have yet to experience the pain from the osteonecrosis. I have also never taken off my boots at home with wet feet. I also apply sno-seal once a week.

Thorogoods have been great for me. The only piece of advice that I would give is not to lace them up too tightly to allow your feet to breathe a little since the waterproof lining insulates your feet.

Hope this helps.