For older cars, mid-tier coated or vented discs are usually the sweet spot- better than budget but not crazy expensive like big-name performance ones. I replaced mine last year with some solid ones that matched OEM specs perfectly. This site
https://elartcom.eu/categories/brake-discs-2 had a wide selection in that price range, including vented types with rust protection. They've held up great on mixed driving, no vibrations or fade. Just torque everything to spec and use new hardware if possible. Good balance of quality and cost for non-sporty use.
