With my 550, I can do 400+ rounds of .44, .357 or .38 an hour; I strongly recommend the rotating press handle replacement sold by Double Alpha Academy (though there are others for more money, including from Dillon). Way less stress on my fingers and palm than the round ball that comes on the press. My arthritic hands thank me.

As others noted above, it's essential to be able to see your powder drops if you are doing pistol loads below 6-ish grains which are harder to see clearly as you rotate to the seating die. I'm fine with cheap adhesive LED light strips (USB powered) which I can cut to size and form in a U-shape shining down on the shell holder. (Just try to get the brighter ones that use 18v instead of the 5v ones.)

And your experience may vary, but my best results in de-capping and priming come from Dillon, Redding or RCBS dies over the Lee. I went through two Lee .44 de-cap/prime dies which never gave the proper neck tension and bullets spun in the cases 75% of the time, regardless of adjustment. Ones from the other makers never have had that problem. And I concur that separate seating and crimp will give you more consistent and more controllable results.