I'm using the OtterBox Defender series. There are two things I don't like about it: First, the little dust cover/flap thing that protects the headset jack and (micro) USB connector are a bit stiff in my opinion. I haven't used the headset jack, but when using the USB cable/power adapter to charge the phone, the little dust cover/flap thing seems to put a slight bit of pressure on the (micro) USB connecter on the cable. The pressure could be (probably is) my imagination, but if it's not it could cause issues with the connecter on the phone and/or the connecter on the USB cable over time. I just pull the end of the silicone slipcover nearest the USB connector off while charging. Second, dirt/dust does get under the screen protector (no big deal for me).