I have 2 Calphalons, 3 good Cuisinart stainless & 4 cast iron skillets. Also 2 cast iron dutch ovens, one of them a camper w/ legs & rimmed lid. All the cast iron is inherited; the smallest c-i skillet has a "3" on the handle, the rest are unmarked. I rarely use the Calphalon, stainless frequently. But some things you just have to use cast iron,like frying taters. When they get cruddy I use hot water and a stainless or copper scrubber, dry 'em then back into a 200 oven; add a little canola oil once they're dry.
Pre-heat the skillets, no matter the type. As Emeril says, use the knobs: don't set 'em to "weld". My little sis can absolutely ruin a cast iron skillet with one try! But they're always salvagable....