They all work ok. I started with a 2 cavity Lee mold, decades ago, and quickly tired of constantly having to tinker with it. Since then I have owned Lyman, RCBS, H&G and Accurate. There are a few other custom makers like M&P, Noe, Ranch Dog, to name a few.
Truthfully, a RCBS mold is a good compromise on a mold that always works well vs cost. I'm slowly buying H&G molds to replace my Lyman and RCBS molds, but thats just me.