I load for many different cartridges, in even more different rifles. Here is my criteria for buying dies: If I am going to load a lot for the given cartridge, I will buy high quality dies. If it is my personal rifle that I plan on shooting a lot, I will buy high quality dies. If it is a cartridge that I don't plan on loading much for or not a common cartridge, I buy basic dies.
98% of the time, I have no problem getting quality rifles to shoot sub-half MOA with the basic RCBS die set with standard FL die/seater. Even factory rifles can be made to shoot very well with basic dies. The key is quality reloading practices, accurate powder scale, and good quality components. Good brass, good powder, good primers and good bullets will create good ammunition with good quality basic die sets.
I use basic Redding or RCBS dies for: .264WM, 26 Nosler, .30-06 Spr, .300WSM, 7.82 Patriot, .300WM, .300NM, .300RUM, 7STW, 7RM, 6.5CM, .308Win, .270Win, .280Rem, .223Rem/5.56Nato, 6.5-.280AI, 6.5-06AI, .22-250, .243Win, .250AI and probably a few others I cannot think of right now. Some because I don't reload them much at all (some for even just one rifle that is not even mine), so the added $150+ cost is not worth it to me. Some because I have had the dies for a LONG time.
I use standard FL dies or bushing dies with micrometer seaters in a lot of other cases like: 6CM, 6.5CM, 6.5SLR, 6.5SS, 6.5-.284 Norma, 28 Nosler, .280AI, 7RM, .25-06AI, .260Rem, 6.5SAUM (Gap 4S), .300RUM, .338 Edge, and a few others. Some because I do a lot of different rifles or loads and the ease of adjustment is a benefit, some because it is a custom chambering, and only certain dies are available for them.
Some cartridges I even have two sets of dies for. Because I either upgraded dies when they got popular, or I was given another set.