Lee Molds
Been using Lee molds since I started casting about twenty years ago. They all still work fine and drop good bullets. I have them in .30 (3), .44, .452 (2), .458, in .45 RB, .50RB, .535RB, .600RB, .690RB and two types of minie, as well as shotgun slugs. The point being that I use them a lot.
I also have molds by Lyman, RCBS, H&G, and CBE. I use them a lot too
I haven't noticed that the Lee molds are any less durable than the others.
I have noticed that the six cavity molds take a while to get to operating temperature and need a hotter melt to stay there.
Durable? How do you wear out a mold?
I like their dies. I like their presses, no better or worse than RCBS or Dillon (I use those also).
Pete