My father had an old Belding and Mull press and dies. Nothing was standard, but he was able to find dies in the calibers that interested him. I think I gave that press to my oldest son. Its more a family heirloom than a practical press. It kind of mounted flat on a bench,not upright like modern presses. Because my first press was a Lyman, I started with Lyman dies. The RCBS was the premium brand back 40+ years ago.
Over time I acquired other dies, that caused by me giving up on standard pistol dies and moving to carbide for 38, 9mm and 44. I remember when Lee products first started to appear around here in the late 1960s I think. Then the dies came along and everyone panned them because they looked and felt cheap. No way I wanted that. Then slowly I managed to pick up a set of .45-70 dies in a trade. Then I bought a set in another caliber.
I think I'm becoming senile because I've become liberal enough to figure some Lee dies might last a while. its still not my first choice.
I'm still cranking away with the same old press and see no reason to change. I really don't want a progressive press and I have no need for them. I'm also guessing you could turn out good ammo with any brand press or dies. Once you get the dies set they should retain that setting nearly forever. I've also noticed that somehow I manage to obtain 3 or 4 sets of 38 and 9mm dies. I have no idea how. Probably because I buy the carbide dies as part of a full set.
Folks who only load handgun ammo don't usually put a lot of stress on the press, just a lot of repeated strokes. Once you start forming cases and full length resizing long and fat rifle cases you really put pressure on the press. Its interesting how some folks rave about Lee products, but then RCBS markets a huge press thats even stronger than the standard press.
I have RCBS case trimmer just because I found one for sale. Mostly Lyman bullet molds because they make the most different molds. Last month I bought my son an RCBS swager/luber because we saw one for sale. I don't need new at this point in my life. I just assume the big names will last longer than I will.