Wilson/C&H, I like the fact that there are no pilots to change, I have one set up for my 204 wildcats(22-204, 6mm-204, 25-204) and can trim all three without having to make any adjustments. They are more accurate than one that clamps on the rim. They are cheap enough that when I find one use I pick it up and just leave it set up for a case class, one for 223/6x45, 250-3000/22-250
For calibers that are low volume, the Lee works just fine for me.