Flat recommendations?

I’m looking to invest in a really good pair of flats. Pinterest has been blowing up with Rothy’s and Tieks ads. Do you have anything recommendations? What are you experiences if you already have a pair of Rothy or Tieks?

My needs:

-comfort is #1

-something for longish walking or something comfortable to wear while holding an infant

-my feet tend to be sweaty

-need some sort of bottom support

-I don’t like to “break in” shoes for too long

-I’m prone to ingrown toenails so I have to have shoes that are roomy at the tip

Thank you!