I've never owned Redding dies and I'm sure they're high quality. I just can't see paying twice what RCBS dies normally run.
They do cost more than the competitions dies with the same features. I have a friend that thinks I'm nuts for running Redding. He would rather spent the extra money on more powder, bullets, etc. I tell hiim he needs to when I out shoot him! HA HA! Anyway, I haven't had any problems with stuck cases, drags and feel they are well worth the money. I run their type s bushing die and micro seater on my .223 loads and have had excellent luck. I'm going to put a micro seater plug on my BLK's seater die. I've got so used to being able to adjust seating depth with a micro I kind of miss it on my new BLK die.
Happy loading and shooting!