Re: FORSTER ULTRA SEATER DIE VS REDDING COMPETITION
I've got the Redding Comp seater in 7RM, the Forster in 338LM and I use the Hornady MicroSeating stem on 3-4 other seaters that I have.
They all perform well and are more precise in seating depth and even in 'returning to zero', so you can go wrong with any of them.
I do think that the Redding and Forster support more of the case when seating a bullet, so alignment might be a tad better with those two brands, although I've never done any empirical testing to determine if this is indeed a fact.
Price wise: Redding, Forster and then Hornady.
Chris