RCBS is the best for normal going price.
Redding is better but usually costs more.
CH-4D Titanium Nitrate dies are the best there are but they are almost pure custom! (But available in any Thread pattern and diameter you can find a press in! Including the real old Lyman Tru-line Jr. 9/16" and old Starr 3/4 inch dies.)
Lyman use to have a good product, but since ATK took over their Customer Service absolutely stinks!!!
Lee, most likely to have best price and OK Customer Service!
"When just good enough will do, Lee's the brand for you!"
Very often too short for other presses.
Hornady, Ho-Hummmmm. neah Customer Service, They change designs so often, you can't count on two die sets using the same decapping dies.
Dillon, Great Customer Service, Designed to be serviced and cleaned without removing from the press. Higher but reasonable priced, only the more common cartridges available.
Last item for consideration: Loading dies are tools, they fail at the oddest time, Even with great C.S. you are down until parts arrive. Try to have dies of the same brand and style so you can strip parts at 10 o'clock at night and load for the next day's outing. (Been there, done that!)
BTW: Every Redding die set I have bought (8 sets) has come with one or two extra decapping pins!)
Ivan