This is the greatest case I've slipped my 3GS into!
And I've tried quite a few. At first I tried the cheap options and basically got what I paid for, like going to a theme park and paying 3 quid for a poncho to keep you dry on the water rides. They don't last, they don't fit and they look pretty rubbish.
Then I went for the flash, more expensive cases, they looked better but weren't durable enough. Waste of money!
This case however, is reasonably priced, as hard as nails and is eye catching to say the least. If batman had a mobile phone this is what he'd dress it in. I wouldn't put my iPhone in any other case after using this one.