I don't think you went wrong with the RCBS dies. There are other brands out there, obviously, and many of them are very good in one way or another. But there is nothing really wrong with the RCBS dies, although you can make some changes (like lapping the seating stem) to make them better. Bottom line, thoiugh, is give them a chance. Don't rush out and try another brand right away. Do try the chamfering tool that is recommended above, and see if that solves your bullet-shaving issue.
You will hear people recommend Lee tools. I have had a few, and still have two Lee die sets. They have some advantages, especially the crimp dies. But I prefer the knurled nuts on the RCBS dies (even though someone above correctly points out that they end up being tightened with pliers), and if you absolutely hate them you can replace them with hex nuts you can loosen and tighten with an open-end wrench.
I really don't think you'll be happier with Lee or Hornady or any other dies. RCBS dies are utilitarian and I've been using them for more than 60 years. That's got to mean something (aside from than the fact that I'm doggone old.). And their customer support is to die for -- just last week I called to tell them I had lost a power transformer for an electronic powder dispenser. It was not broken, it was LOST, and that was my own fault. They sent me a replacement in two days at no cost! Try that with another product.