Personally I use Diadora Jalapenos, and find them excellent. Not to pricey either. They've saved my heel from being sliced open by a broken bottle bottom standing up with "horrible" glass spikes sticking out of it. They outer skin of the shoe looked like a razor had been used on it, but the stiff stuff inside the material took no strain at all. Also heard a story about someone in the UK, who had a big truck knock him off and go over his foot while he was on his side and his foot was only bruised.
Sold me on them anyway!!! You can also walk in them ok!