I primarily use cast iron and stainless steel for cooking, but a nice set of non-stick frying pans is necessary, too! These replaced an older set that, although I was careful, still ended up getting nicked and scratched over time. I have been using these about two months now, and they are holding up great. Both sizes are useful. I would say I use each one at least once a week in various applications. I always use silicone tools with them, and keep a pad in between while storing them to avoid scratching. They are much heavier and more substantial than most non-stick frying pans, and I can tell they're extremely well made.