When I started to reload for rifle I wanted to learn more about dies so I cut and pasted from a few places the info below.
It depends on the rifle If it is a high quality gun with a closely dimensioned chamber, and a heavy target barrel, then it may make sense to use a better quality die set. For this kind of gun I use a Forster Bump/Bushing die for sizing. It works well. I can bump the shoulder 0.001 to 0.0005", and at the same time resize about two thirds of the neck, leaving a tight fitting one third to ensure the cartridge sits concentric. For seating the Forster Ultra Seater with the micrometer adjustment makes it easy to get repeatable seating depths, which loading different bullet weights and designs.
For hunting ammo I like the Lee Collet Neck Sizer for concentricity and case life, the Hornady seater for concentricity, simplicity, and value, and don't use FLS dies often enough to care much. Since I like the Hornady seater and they give away bullets I've just been buying their two-die sets right off the bat. I've had issues with the specs on one of their FLS dies.
The Lee Collet Neck sizer is a lot cheaper than the Redding Type S dies and works identically. It makes for extraordinary case life and I have never had to FLS cases due to an inability to chamber them... some '06 cases of mine have been reloaded +15x.
Of the standard dies sets the best seater out there is the Hornady New Dimension seater. Reports of issues with their sizing dies.
The worst seater IMO is the ridiculous RCBS seater. I also think the RCBS locking ring brass setscrew is the most idiotic design ever. I like their sizers and often pair them with the Hornady seater. And a Hornady locking ring!
If Lee makes a collet die for the cartridge I'm loading I really like them, once again paired with the Hornady seater.
Nowadays, I buy a Forster set and compliment it with a Lee collett die. I only use the Forster FL die rarely. The Lee collett and the Forster seater turn out the most concentric, and accurate, ammo I've ever seen.
Of the standard dies sets the best seater out there is the Hornady New Dimension seater. I've never had a problem with their sizing dies either but some folks are reporting issues with them.
The worst seater IMO is the ridiculous RCBS seater. I also think the RCBS locking ring brass setscrew is the most idiotic design ever. I like their sizers and often pair them with the Hornady seater. And a Hornady locking ring!
If Lee makes a collet die for the cartridge I'm loading I really like them, once again paired with the Hornady seater.