Check with EddieCoyle on when his next reloading class is. He one of the most knowledgeable guys I've ever met on the subject for both rifle and pistol.
I know plenty of people who are happy with the 550B if you are looking to save a buck. I am a red guy. I have the Hornady L-N-L AP and single stage and have no complaints about it. Their warranty is every bit as good as Dillon's. There are pro's and con's to both machines (550b vs LNL) and are priced about the same. If you go with a LNL you get a voucher for 500 free bullets, just pay shipping.
Thank you so much for the advice. I appreciate it very much!!!