I've tried both, and I much prefer the Otterbox. It feels a lot more solid, and I had problems with the fit of the Seidio on my Droid (my hubby currently has a Seidio on his Droid and has had no problems with it as of yet). I went through two Seidios, and had the same issue, and returned both for the Otterbox. Wow, I am REALLY happy with the Otterbox! I'm so glad I decided to go with that one.