If you reload for a wildcat you will notice the difference between annealed cases and those that are not. Annealing will give you longer case life with less split cases. I load the 35 Whelen and the 46-70 cases, I get double the case life out of annealed cases. I’ve done both the salt bath process and the Annealeez process. The AnnealEez is much faster and does a good job. Once you have worked with annealed brass you will notice the difference in neck turning, resizing and seating bullets right away. If you are fire forming brass, again you will notice the difference as to how the brass will take a fireform better with annealed brass over brass that has not been annealed.I don't anneal. I've been close to buying an annealer and getting into it, but I haven't personally seen any negatives to not annealing. I think there's merit to it for sure, but I don't think it's a necessity. That's just my opinion and experience, and it may change.