Silvertips are not reduced recoil rounds, they are fullhouse. So I wouldn't look there, the Federal reduced recoil gets good ratings from tests. In the past, I have used silvertips and they do have some kick in a fairly small gun. My favorite SD rounds are made by Hornady and Federal, I don't use reduced recoil in my guns but I do trust Federal to put out a quality product.
Edit: I'm sorry, I read you gun as a LC9 but it is clearly an LCP. I would research .380 acp but I still like and trust Fed's and Hornady's