I had a Lyman 450, I bought it new in 1979, broke the ratchet, broke the handle, stripped a few feed screws. I chucked it out in the Garage and bought a RCBS LAM2, I have never broke anything on it other than a ball on the end of the lube pressure handle.
I now also have a Star type lubrisizer, it is great but I am still keeping the RCBS Sizer.