Carbide dies. I’ve had lube foul the powder (yes, I used too much). I hate lube - it’s messy, many opportunities for too much or too little (scratches those beautiful nickel cases), and it’s an extra step. There’s no choice for rifle cases of course. Just MHO
Lee makes some lube that is great, it’s based on the lube they use for forming automotive panels. It dries flaky, a little bit won’t hurt powder.
I have always used carbide dies for straight walled pistol rounds. I hate messing with lube too. Now if I could just find 158 gr JHPs.