Funny, I asked that exact same question just a few short weeks ago! Well this is what I was told and what I learned!
Junk the RCBS fast - Thank God for Ebay
Buy Lee Collet neck sizing die!
Buy Redding Body Die!
Buy a Forster bench rest seater die!
Never look back!!!
Doug.
Ps, I have used Redding for over 20 years and I never, ever, thought I would tell anyone to use a Lee die. I never, ever thought I would tell anyone to buy a Forster die. Boy was I stupid.... The Forster bench rest seater is every bit as good and I think better then the Redding comp seater. I have used the Redding "S" type neck dies since they came out and always thought I was doing the absolute best job - wrong! Once I tried the Lee Collet and Forster dies w/ the Redding Body die, well lets just say I have seen alot less light at the end of the tunnel (at the target that is). /ubbthreads/images/graemlins/grin.gif