I have an 8900 and i purchased the invisible shield, I also have the BB brand silicone cover. I have always liked the silicone covers, but they don't protect the screen. So I got the Invisible shield, and it works just like they say it will, and it is thin enough to still use my silicone cover which I think helps absorb impacts up to 4 feet. I did the full phone invisible shield, but honestly, with my silicone cover, I really only need the screen, top 4 buttons, and the top black part of the phone. Nothing else can be touched with the silicone cover.

BB Silicone Cover I give 9.5 out of 10 Click Here For BB Skin

Invisible Shield I give 9.5 out of 10 because there is slight overlapping in one part that could have been fixed if they cut the pieces a little shorter. Click Here For Invisible Shield