Have never owned a otter in my life and decided to get this one. I work roadside assistance for Mercedes Benz, and I'm constantly on my phone using GPS, Facebook, apps that drain your battery, and YouTube. This extra battery life comes in handy. Only thing I wish was different was the mini USB charging port, should hv kept it originally a 30 pin connector so your not having to search for a mini USB port. The whole two day charge thing hasn't been tested, cause I'm always on my phone. Mine last a 12-14 hour span before your looking for the charger. All in all very great product!
Pros: High quality, Durable, great designnot as bulky as it seems
Cons: 30 pin connector for charging would hv been nice