I would suggest a good reloading book first to at least get an idea of what you are in for, and what limitations each setup has
depends on what you are loading, and how many.
50rd batches of 500s&w every couple weeks, you would be best off with a single stage, even though it's overkill, the lee classic cast press is a top notch value, even the anniversary kit with the challenger press is plenty strong for most any hangun load. I have an rcbs rock chucker mostly for rifle calibers, but occasionally use it to size and decap big revolver calibers destined for the trimmer (hot magnum loads get the special treatment) I use a table mounted drum measure (rcbs uniflow) to get close, then a trickler to bring up to desired load with a midway digital scale.
250 rd batches 44mag, 45acp every week or two. Lots of people like the turret presses, faster than single stage, cheaper and more precise than progressives. I use a lee classic cast turret for match loads in 45acp and 357 mag, along with calibers I don't load often or in volume. I use a lee pro disk measure to charge, and a set of carbide dies.
250+ rd batches, or practice/plinking ammo in 1000 rd batches every couple months I use a progressive. By far the fastest I probably loaded 20,000 rds on a pair of lee pro1000s, 1 set up for small primers, the other in large, and once set up just keep an eye on what is going on, set a bullet on the case under the seating die, keep the primers and powder flowing, and a loaded round pops out with every pull of the handle. I have recently moved up to a loadmaster, and it seems to be just about as fast, but a lot more precise, and it accepts a fourth (factory crimp) die. I can easily crank out a few hundred rounds an hour, but setup is a little time consuming, so I normally load 1000 rounds of stuff I shoot a lot of on this (.223, 9mm, 45acp, 357mag) It uses the same pro disk measure, and $120 gets you started with a pro1000 kit in one caliber.
just make sure you have a strong table, floor mat(for the inevitable spills) a shelf to keep manuals and components, a scale, ammo boxes, a few tupperware bowls, trash can and perhaps a tumbler/media separator, calipers, a bullet puller, pack of hex keys/screwdrivers and some form of eye protection.
Many of the lee press kits come with dies, shell holders, priming tools and spare parts, basically bolt the press down and start loading.
I shoot a lot, shoot quite a variety of calibers, and reloading is definitely not a one size fits all type of thing, but I hope you can find something useful in your application
