I am currently reloading 300 Win Mag, 9mm, and 45acp, and have components ready for 40 and 223. Running a single stage Lee for the large rifle, a Dillon Square Deal for the 40 and 45, and a Dillon 1050 for 9mm and 223. As mentioned it does take up a lot of space, not only for the loaders but for all the components.
If you are looking for a cheap pistol progressive loader the Square Deal is a great little press. Not to mention caliber conversions are fairly cheap. The Dillon Square Deal goes for about $350 and comes with dies. Dillon is also great when it comes to warranties. I've had a few faulty parts and they have always replaced them no questions asked and quickly.
If you are looking into reloading for rifle, a single stage is a great way to start. Reloading 223 is kind of a bitch tho. You will need a swager to prep brass with military crimps. If I am not mistaken, Lee has a complete kit, less dies for about $150. Comes with a powder drop and scale, as well as the press itself.
Other than that, all you will need is a tumbler to clean your brass, a case gauge for the caliber you are reloading, some components and you are good to go! I would suggest buying your components in bulk. More and more people are reloading and components especially powder and primer are sometimes hard to find and are often times out of stock locally.