I've had more trouble with RCBS does over the years than all others combined.
Hornady, Lee, Redding (old, old Redding) and of course Dillon have served me very well for several decades.
I have yet to personally use any of the customs from PT&G or whiddon but from what I've read and heard over the years they both do good work.
Most People have had problems with one die or the other.
My only problems with RCBS and some of the others have been there inability to have a full range of adjustments. Before the newer dies came out we had to shim or grind the dies in order to get the proper sizing (There were the type that You set by tightening against the shell holder and making another 1/8th turn to get the press to break over.
We/I had to buy Small base dies in order to size for Semi Auto's. But now dies can be adjusted beyond small base dimensions, Making them much more versatile.
I loaded all of my Match ammo with RCBS and never had any problems with them If I set them correctly. (This is the problem with most dies nowadays, The re loader not the dies).
I have made dies, and used custom dies and found them to be great if set correctly. I have not used every brand of dies available because of need And have been satisfied with all I have used except Lee. Once I started testing concentricity, I tossed my Lees because of quality and replaced them because of features and quality of other brands.
I cant honestly say the new Lee dies are bad/poor because I have not bought any because of past experiences.
Now If I buy dies, my choices are based on needs and requirements that I place on the cartridge and it's use. With current brass quality and differences, I tend to buy more Bushing dies. The load and shoot rounds get the Hornady New dimension dies because of there adjustability, I can use them on Semi Autos and make them function perfectly.
Of over 50 die sets, I have RCBS, Hornady new dimension and a few bushing dies, Redding,(Both standard and bushing dies. and a couple of hard to find calibers in the Lee that I have not replaced.
No matter what brand of dies anyone likes, proper setting is very important to best fit your chamber (No two chambers are exactly alike and dies must be set for that chamber for best results).
J E CUSTOM