The defender otterbox offers more protection for your phone and is thicker, however its more expensive and bulkier. The commuter otterbox is a better option is you just drop your phone alot...it still protects it everytime. They suggest the defender for people with outside jobs who usually do more damage to their phones.
So like if I want to put my phone in my back pocket, the defense otterbox would be to thick? I'm just a little concerned...lol