I have a 650 and just got the 1100. If you are doing several calibers and can only have 1 it’s much cheaper and easier to change on the 650/750. If you’re doing tons of volume, lots of crimped primers, just 1 or 2 calibers the 1100 is awesome. Almost 100% of my brass is crimped which was why I got the 1100. My 650 is mostly only used for 5.56/300blk case prep now with the Dillon trimmer.