I'm not trying to sound like a goon or anything, but why not just get plain rotors and paint them when they're new? Keep the paint off the friction surface and paint down between the veins. I've done this for +20 years with success using primer and a can of flat black Rustoleum. I always do it this way and the best example I have is my wife's Suburban. I put new brakes on it when we bought it at 90,000 miles or so and she ran it about 100,000 miles or so before I replaced them (I didn't type that wrong and it has almost 230,000 on it today). It got driven every day for 10-11 years, no matter the weather. I don't recall ever touching them up when I had the wheels off and they were still painted black when I replaced them a couple years ago.
I can't speak on the drilled/slotted features, though, I'm just commenting on not wanting them to rust.
Duuno, thats what I do when im not feeling lazy. I run ACdelcos tho too, not a performance slotted rotor. I use high temp header paint.
Glad you posted this I though I thought I was the only one that this was all going over my head lol.
98-XP e85 SSAC HPT AGX Bullets Every BRM piece home built trans
99-HPT ssic headers ported blower
94z28 with a cam that chops so hard it hurts def peopels ears.