Dillons are the cream of the crop when it comes to progressive presses. @dddoo7 has lots of experience and knowledge with Dillons and can likely answer your questions best.
Because of needing to trim rifle brass you almost have to run the brass through the press twice. Once to size, again to load. I personally size and prime my .223 brass on the single stage. I then charge, seat, and set COAL on my progressive. Yes it is faster than a single stage, but I also only invested about $100 into getting my progressive up and running. If I had to buy a new press and set it up for the few hundred rounds of pistol and AR stuff a year, I wouldn’t.
So the question really comes down to how many rounds do you plan on processing a year? If it’s just a few hundred, a turret may be a wiser investment. If your talking a couple thousand, well time is money.