"I have a hard time discerning quality differences between brands. I use them all."
Ditto. In fact, I've found NO consistant difference in effect by brand alone. Features change some functions, a little, but that's a personal preference thing having little to do with what can be done with the dies. Some are a lot more costly and prettier than others but the ammo does't care about that!
On average, I find as much difference between dies of the same brand as between brands. And, after some 46 years of reloading and currently have some 50+ dies sets in about ten brands in some 30 calibers (all the current brands except Dillon, some no longer made, and have owned several more sets over the years) that I have actually measured the output from both sizers and seaters, I think I have a solid base to say that.
Only way I can suggest anyone can get a 'better die set' is to buy as many sets as possible for whatever cartridge and measure what each die does; keep the best single individual dies and sell the rest; you sure can't do it by buying your dies in a special color box! But, if it's any comfort to you, you can also be sure the output of any average die set will do very good work if you do your part.