I've had my S0 since release and haven't had any scratches on the display, however my friend got a S3 last year and has noticed some scratches which made me curious, especially after seeing the "sapphire" on the iPhone camera's are actually just a low quality mix that scratches at around the same point that glass does. Has Apple been changing the quality of the sapphire since the S0 or has it always been a low quality sapphire that can scratch at lower Mohs? I'm just curious because the sapphire is the main reason why I upgraded to the SS model and I'd be very disappointed if I scratched it. However I guess if they haven't modified it and my S0 didn't scratch I should just use it and not worry about it. Just disappointed to see tests where it scratches at a level 6 when a real sapphire watch holds up until level 8. Hoping that the S4 might have a better sapphire quality but not holding my breath.