I agree with what was said above. I have a Dillon Square Deal and I load .40S&W and .45 ACP on it. I like it alot, and to say it is easy to use is the understatement of the century. However the Square Deal is a "production style" machine, and despite what they say it takes 20-30 minutes for the average person to change it over to another caliber, and that is assuming dedicated tooling for each caliber at about $170 per complete setup.(I have 2 setups) Tooling is not interchangeable with other machines and is dedicated to the SDB. For all of the calibers you want to load that is a significant outlay. There are always ones available on Ebay with varying amounts of tooling, and usually somebody is selling tooling also. I got mine off Ebay and the NO BS guarantee is still there no matter what. Most people just buy another machine if they want to load different calibers and leave it setup. I can do about 300 rnds per hour on mine without breaking a sweat. The machine also has a really good "feel" to it which makes it a joy to use.
Dillon is a very good outfit to deal with.
If you are going to load 500-1000 rounds per sitting this is the way to go. However if you are going to do 50-100 per sitting or you are going to experiment with and vary loadings then I'd like to suggest a different approach as the SDB is all about cranking out a specific load and making lots of them in the least amount of time.
I have a C&H Pistol Champ.
This Press is a 4 station H Frame press, and is quick and easy to set up. It takes standard 7/8-14 dies, and you move the cartridge case to each station as you load that round. The center station in the back is for Resizing and deprimeing, and It will do rifle cases too. The station on the left side of the machine is for prime expand the case mouth and charge the case, the center front station is the bullet seating station and the right front is for the Crimp. The powder measure can be removed and a funnel can be installed or a Lee Rifle charging die installed, and charges can be measured off the machine and then dropped into the individual cases while in the press.
You can process 150-200 rounds per hour on one of these machines easily, and you won't have a significant learning curve or tooling expendature like there is on any progressive machine, as all of your existing tooling and expertise in loading will work on this machine. It is a small step up to this type of loading and other systems are a little more complicated. If you like simple this is it.
They come with one caliber setup. About $285 and WELL WORTH IT!!!. Or you can buy the bare press for around $200. Excellent quality and C&H (Dave Davidson) is good to deal with. You don't see them often on Ebay and they usually are right at new price when you do. This says something.
I load all of my .44 Mag/Spec on this press and I can switch back and forth between the 2 cases in about 5 minutes. I also load all of my .223 and .30-06 loads on this press, as I can break the cases down (size and deprime) on the Rock Chucker, tumble, and then load on the Pistol Champ. That way I only handle any individual clean case once and then it is done, and goes into the storage box.
It is another way to go and it sounds to me like if you want to load multiple calibers in short quantities, this may be a better choice for you. Most people who load alot of pistol rounds have a Dedicated Press for each caliber rather than doing the change over routine. There are several guys on here that have a dedicated loading machine for every individual round they load.
The other route is a Dillon 550B which is a cross between a full progressive, a turret press, and a single stage press. The tooling is common and the change over is about 10-15 minutes. I'd say if you were going to do a significant amount of rifle loading like 200-300 of one caliber at a time then this would probably be the best idea as the 500B will load just about anything, both pistol or rifle, and once set up it is pretty fast. There is also alot of used tooling available on Ebay for this machine, and it also takes normal 7/8-14 dies.
If you are only going to do 100-200 rounds of any caliber in one sitting then none of the progressive presses are going to be ideal as the setup and changeover time has to be "amortized" over the number of finished rounds you make off that set up. The less setup time the less amount of time is wasted. The longer the run the smaller the amount of setup time is absorbed by each round. Something to think about if you value your time.
There are several options for you to consider. I wish you luck in your pursuit of the ideal machine for your needs.
Randy