For a bolt action the Lee Deluxe die set weill do everything you need for .223 Rem. My RCBS dies have been used twice in over a year. They still sit in my cabinet. The Lee dies do everything I need. The Collet die is worht its weight in gold. No case prep required other than the standard measuring for length, and a paper clip test for seperation. No cleaning or lubing required saves me time to do other things. Like loading for my hand gun rounds.
Note I bought the RCBS dies due to the fact that I did not have the Lee dies available at the time. I used the RCBS Small Base Die set twice for the week I was waiting on the Lee dies.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.