It already saved my I9000 several times, including drops against hard floors and asphalt. The phone survived and the case itself wasn't dented.
It is also gives a surprisingly good surface grip when placed face down.
I myself like the design, it is a little bulky but that's what you pay for protection.
Better looking the case-mate in my opinion.
Only cons I can think of is the included screen protector which is awkwardly cut shorter than the actual screen surface. I just replace it with a 1$ one from ebay.