OK being an old geezer at only 55 years old I have used a single stage press for smokeless reloading and a Lyman 310 for my BPCR loading for 35 years and I think it is time to try one of them nee fangled progressive presses. I reload 9mm, .357 Mag, 10mm, 10mm magnum (soon), 38-40, .410 GNR, .454 Casull and .480 Ruger presently. I am looking at the Dillon 550C or the 750. What accessories are needed along with these presses to get up and rolling out ammo? Pros and cons with these?