Dillon user's front and center Looking to get a Dillion in the near future! I shoot 9mm,.357 and .38 no Rifles. I see the Sd has to use their dies I also like the 550 B price difference isn't much. which is the most bang for the buck? Ease of set up and use? I have a few sets of RCBS dies so would like to use them! Is the any advantage on using Dillon dies ?