My issue with many craft eyelets is that the metal is too soft and when I use my crop-a-dile tool they "splatter" and split unevenly. These are a harder metal that is not scored and they evenly fold for me without the metal breaking. The price is also very reasonable as compared to other brands. The only reason I didn't give them 5 stars is that the metal is much stronger and it takes much more effort to squeeze them down and they don't lay perfectly flat.
These will not smash down with you Crop-A-Dile. That was biggie for me, because I rarely use hammer anymore.