I'm like Mike!
I have about 20 turrets above my bench loaded with dies of different cartridges.
But i use a mix of dies, not just Lee.
All my pistol & my M1 Carbine and 223 Rem are Lee 4 die sets.
Some of my rifle sets are a mix of dies. RCBS full length with Lee seating for example.
I have Lee, RCBS, Hornady, Lyman, Pacific.
All but one of my crimp dies are Lee.
Depends upon what your goals and budget are.
I will say, i hate the RCBS, and some other dies that have the 2" long screws sticking out of the top! They will cut your arm if you have to reach over them!