It actually uses the same rendering engine as Safari but it handles JS much better, and it utilise a different task for every tab, meaning it doesn't crash all the windows if one stops responding. I think I sent myself to sleep there for a second.
Been using chrome for ages now and its superb. I still have MS internet explorer and every time i revert (not very often) its rubbish. Upgrade Simon, you will love it loads of clever intuitive extras on it too!