Once upon a time before life in general got thrown into the mix, I shot on average two to three hundred rounds from various handguns a week. Initially this started out with one single stage press, which to was quickly added a RCBS 4x4 progressive. To date I could not even begin to tally the amount of rounds which has been loaded on the 4x4 since I got it back in the early 80's.
Today however, with work, and other things that life has a habit of tossing at one, I usually resort to the single stage quite often. In fact I have close to a half dozen of them for particular uses. Two are small being the RCBS and the Lee brands. These are used for load development at the range, and various small caliber jobs around the house. Two more are bigger brothers and are set up to deprime and size depending on what caliber is being loaded. The next are the newest and oldest. The oldest is an old WElls that my pop used and taught me the ropes on, and I use it primarily for swedging primer pockets on military cases. The other is a RCBS Rock Chucker, to which gets the most overall use. I use it to size cast bullets, and to load both rifle and handgun hunting rounds. Not that it is any better than the progressive, just that for he hunting stuff I am usually only loading 50 rounds at most so it does a great job of keeping things more consistent.
With the 4x4, it's hard to argue about production. IT will toss out a new round after the 4 pull with every pull of the handle until you need to reload the primer tubes, or powder measure. Getting into a rhythm with it, I can easily load more rounds in an evening than I have time to shoot up in a couple of months. This is of course if I have prepped the cases. I find I am different than most handgun shooters as I usually check and trim my cases, if for no other reason to square the mouth of the case. This way I am at least assured that my crimp setting will result in most if not all of them being consistent.