Dillon 550 is the best in my opinion for a progressive. I had a hornady and it was a pain at times to get working properly and set up. For the cost difference Dillon is the way to go. I do not like the Dillon Square Deal and would rather use a Lee progressive than the SD. FWIW...the Lee presses do work fine if you want to get into reloading on the cheap. They are functional but not near the quality of the Dillon.
The 550 will do anything you need done, whether you are reloading pistol or rifle stuff. I have several presses of various makes, but use my 550 exclusively for handgun. I dont generally use a progressive for rifle and instead use Redding turret presses, but a turret press is also an option for you if you arent shooting a ton and are considerably cheaper with high quality.
Components are showing up...brass is real easy to find though. Good luck...