The Diztronic: my work week case, flexible and easy on/off, does a decent job of protecting when dropped and is still slim. However, the case IS slippery, make no mistake. I was surprised when I got it and it even has a matte finish. I've actually dropped the phone twice and it was totally the case's fault...no damage though LOL so I guess it works.
Spigen Neo Hybrid: went in the garbage a few days after using it. Well made, excellent quality, good fit, looks great...too big for me. Transformed an already borderline too big phone into a hulk. Not my type of case but I can see how people like it.
Sparin: my favorite of all, very slim but mediocre in protection. Unfortunately the version I got is discontinued for some reason. Too bad, I'd have bought a few more for safe keeping.