I am looking for a rugged case for my ipad 2 that works well with a invisible shield. I have already bought some cases and tried them out and took them back because of the water mark on the built in screen protector with the invisible shield. I have already tried Griffin Survivor- created water mark with the invisible shield Gumdrop Drop Tech- Hard to open port covers and created watermark on the invisible shield Trident Kraken 2- created watermark on invisible shield and the snaps at the top broke offOnes I have looked at but not officially tried Otterbox Defender-don't like the dock flap and no cover for the speaker Trident Aegis- open 30 pin dot connector and not too protectiveMaybe I am too picky at the cases. I am looking for one that will work with the invisible shield or find a way to stop the water marking effect with the screens. I have heard to use baby powder or eyeglass cleaner, but I have not tried those.Do you have any other cases you would prefer? Thanks.