We also use the Allflex Bubblegum - they are soft, the EID part is neatly contained in the pin, easy to read and none of ours has fallen out from last year or this BUT they are difficult sometimes to get in. This is because they are so flexible that the pin can be deviated by the ear as you get ready to close the applicator. A quick closing is more likely to end in failure than a bit slower - but obviously not too slow. We did have one tag where the pin broke on application, which is a bummer as they are very difficult to remove.