I own one, does what it says, the primer pocket uniforming tool gets the most use for new brass, havent needed to ream out a mil crimped primer yet.
I would suggest adding the lyman flash hole deburring tool to the kit and get some rcbs primer pocket brushes in large and small, they fit the lyman handles and work better than the lyman primer pocket scraper.
I use the lee trimmer to trim with and so far it handles all I need it to do.
trimming deburring,chamfering , flashhole deburring and primer pocket uniforming Ill do 40-50 at a time for new brass. takes a bit and you get some sore fingers but the pocket uniforming and flashhole deburring is a one time per case thing