RE: 45 auto
By far the vast majority of reloaders do NOT have progressive presses. And they are perfectly happy without them. If you shoot lots of ammo and basically always the same load and bullet.........then a progressive is the cat's whiskers. For everyone else a progressive press is probably not the answer. I didn't think I could live until I got a progressive press. I bought two of them...both Dillons and both fine machines. After about a year I realized I'd rather be loading on my old Rockchucker. I sold the Dillons and stuck the Rockchucker back on my bench. I load a few thousand rounds each year but I still just enjoy this press. I change around too much to ever be happy with a progressive. When I go out to load one day, I may build some 270s. When I go back out that night I may be thinking about my .357 and want to load some of them. It's just whatever mood I'm in. And reloading is fun to me...not a race.
Point is, get to know reloading and WHO you are before investing the big bucks in a progressive press. When the time comes, you'll know if you need to worry about progressives or not. And there will be a good one waiting for you at Dillons if that's what you want.