I would say Invisible shield... this is the first time I have got a screen or full body protection for any of my PDA... till now I did not use any... and Invisibleshield has been the first one and I am pretty happy with the results... Cannot really complain about them. Covers the whole body... touch sensitivity is still the same... plus scratch proof... some guy had dropped his from as high as the waist level like more then 3 times and not even a scratch on the phone...
Can't be more happier... but always have an open mind to try anything with good reviews...