Like you i was torn between red or blue. I opted for the 550c " all my partners running same" was my reasoning. Took me a bit to get it set up at first. Dillons dies are kind of a pain to set up compared to other manufacturers. Now that its dialed in im happy with it for the most part. Getting your rhythm down is the tricky part for a speedy cyclic rate. Loading 223, 45 acp, and 380 auto with it. After tool heads stands and conversion kits for different calibers the costs started adding up. " but doesn't everything in shooting sports" Honestly only had machine for bout 9 months, and searching craigslist for a used hornady.
Just my .2cents
Just my .2cents