While I favor carbide dies like most people for straight wall cases, we still use resizing lube for everything else, and in plain dies for straight wall cases that we may have. I have always used RCBS or any good brand name figuring that those gel lubes were an exceptional anti-seize lube needed for the job. I was at my secondary reloading station though, and didn't have any, so I thought that I would experiment. I squirted a little 80W-90 gear oil that was handy on to a folded paper towel and tried that, and it worked great, even if it was a little smelly. Mind you, I was only sizing .45 Colt, but I did try to partially resize an unlubed case just as a control comparison before proceeding, and that was quite difficult and I stopped before it got stuck. So there must be any number of alternate lubes that work just fine. What do you use?