To be specific about it, what are you loading for, and towards what end? There are many instances where the cost for Redding, Whidden, SAC, Forster, etc isn't necessary and a standard Lee, RCBS or Hornady FL die will work fine. And where are you at overall? If for instance you're using a powder drop and expecting to change to a mic seating die to tighten up your groups, you're upgrading the wrong tool at that point.
I have over a dozen sets of Hornady dies, they make perfectly serviceable minimum-spec rounds. Dies do different things, and you don't always needs to most expensive for everything. If you're trying to squeeze every ounce out of a 6BR at 1000 yards then yes the features Redding offers might benefit you. If you're making 300 BLK subs to shoot pigs with Hornady would be fine. If you're sizing to fit mag length a micrometer might not be all that useful to you. Some seating dies specifically say don't use to seat compressed loads. I keep the Hornady dies around because they're cheap enough to have for everything, and sometimes you need to size a case differently. I don't use them all the time though.
But the upsides to the more expensive dies are going to be more consistent QC in the dies' dimensions, more options around sizing like getting necks honed out, more functionality like bumping shoulders more consistently, better quality mic stems, more options regarding button sizes, it's a pretty long list because there are several variations past a standard FL die.
I've started to mandrel expand necks, so for me I needed to change to a bushing die to get better control over outside neck sizing before I open the case as the last step. No use in using a Hornady die to squeeze the neck down 0.003+ just to have to it right back up again. I could have ordered a custom honed FL die, but a bushing die is a more flexible solution with brass being hard to come by, meaning I have multiple brands/lots instead of one for the rifle I'm working on now.