I loaded on a RockChucker for almost 20 years before I started shooting enough pistol/223 ammo to make the Lee Classic Turret a good option. I've done some loading on a friend's Dillon 550 and can definitely see why anyone loading a lot of rounds would make that investment. If I had it to do over again, I'd still have the same two presses I have today, based on the limited volume I shoot, but the wide variety of cartridges for which I reload.
Almost exactly the same here.
I generally keep my Rockchucker set up for re-sizing, which ever caliber I intend to spend time on for the foreseeable amount of time I have to just do what ever I want. I have it on a massively built "anvil stand" that I found years ago.
My Lee has a place of honor over the corner leg of my clean bench. I call it that, because I was lucky enough to find a huge piece of galvanized sheet metal, fairly heavy gauge, that I use to top off the bench. No more plywood top, here.
Those Dillons rock for sure, but my station in the scheme of things does not justify the outlay of funds.
Besides, I enjoy watching every round turn out perfectly.