Polycarbonate vs?

Whats the best material for a ipad case, if you leave out the rule; the thicker the better?
I have ordered a polycarbonate case wich is very thin, will that make my ipad survive crash(on likelyhood, not on 100% guarantee) on lets say a half meter drop on concrete?(dont care about damage to the case)
Or is there a other material wich should work better?

Please give me some insight into the matter, thanks.