Why I chose a turret press.
Cost, it was a less than just about any progressive press out there, with the closest priced item being the Lee progressives.
Ease of setup, once my dies have been set in the removable turret of the Lee, I just pop it out of pop it in as I need it. Though most progressives can be just as simple with practice, but it was less pre-setup before loading I figured.
Single Stage loading, easily done if I want to do just a couple of test rounds, or with the rifle rounds, I load them in a loading block and then seat the bullet, like I had a single stage.
Speed, more than a single stage, but ever pull on a progressive makes a round, on a turret, it ends up being a few more pulls.
I prefer to use the Lee hand primer tool also, so a progressive which primed wouldn't help me much, though if I had one, I would consider using the primer system on it.
I think I produce plenty of ammo on my turret press, I can't see the cost of a full progressive setup being worth it 'cause I don't have the money for the amount of supplies I would eat through. For some, it's a hard choice. Also, look at how many calibers you are going to load. A Dillon Square Deal for one or two handgun calibers might be a good idea if you shoot enough to warrant the cost outlay.