I haven't used many themes before, but this one caught my eye. I have now used it on several of my websites, and each one looks different. It can look very simple and stylish, see http://www.webespos.co.uk for an idea of one way this can go, and http://www.appleupgrade.co.uk for a slight twist on the theme.
I had cause to contact the designer, and I had a reply within hours.
I love this theme, sophisticated, Mac like and clean.