I also have good luck with the ptsk pans as long as I use crisco or a lot of olive oil. I have the 14x14 Lloyd lid. It’s definitely not as nice as the raised plastic lid I have for my vollrath half sheet pan, but it does the trick. My main complaint is that the nesting style means there’s really not much room for dough between the pan and the lid, which is annoying when you’re letting the dough relax before stretching or if you want the dough up the sides of the pan. I often turn the lid upside down to get around that, and that works just fine.