Yes, I use them in my RCBS presses, and yes, I do have an issue.

The issue is with the powder through expanding die. It is made for use with Lees powder charging equipment and so it has a sliding case expander that slides up and down in the die to activate the powder dispenser. When not using their powder dispensers this expander still slides up and down and creates a heavy jerking vibration and requires extra effort as compared to other brands of dies. If you notice this problem you can block the expander at the bottom of it's travel and it will work just as smooth as the better brands of dies. I use a 5/16" hex nut with two 1/4" lock washers and this combination seems to work in all their handgun dies so far.