Nurses, Dental Assistants

Or anybody that's on their feet most of the day, help! What shoes do you wear?? Most of my tennis shoes are CrossFit specific shoes which works really well for working out but since going back to work and being on my feet so many hours a day, my feet are KILLING ME! I need something that's going to be comfortable and durable, I'm fine with spending any amount of money as long as my feet are comfortable!