Another vote for Hornady Unique. I've used it for several years. Just last month my best friend was setting up to load 50 BMG and he was having terrible trouble resizing cases. He had tried RCBS case lube and cases were wanting to stick. I brought over my Unique and the difference was night and day. I knew it was good but I didn't realize it was that much better. He even got some Imperial to try and says he likes the Hornady Unique better.