I buy cheap ones. Current fave is
Bella Cucina, from the hardware store, cost about $20, it'll last a year, maybe two, before stuff starts sticking. Before that it was a Star-frit. I could have spent 10 times more on a fancy name brand, but stuff sticks eventually (Paderno, Calphalon ... pricy landfill). Seems to me the extra money pays for a name, not non-stick durability.