i had an
otterbox defender on my iphone. stopped using it after about a month. the case is huge and when worn on the belt it really dug into my side. the screen protector is built into the case and can't be removed. this protector has a known issue where it produces an
"oily screen" and looks horrible. the solution is to apply corn starch or baby powder inside the case before putting your iphone inside. decided that wasn't for me and the case now is collecting its own dust on a bookshelf.
i'd be wary of their cases if they have a similar built-in screen guard.