10 very nice & clever built in 'styles' which are actually very different from each other so you're very likely to find one you like.
Its very simple to install and even for a novice like me, the stylesheets are a breeze to tweak to exactly as I wanted it.
The guys at SIS have been really helpful with some minor compatibility issues I had and solved them overnight (nb there's a time difference so they effectively fixed it immediately)
Was going to just give it 4/5 as there is still a very very minor thing with IE8 but frankly, most of the extensions here have an issue with that "dog" of a browser(!) and in actual fact the guys at SIS fixed it to the point that I'm happy with it, so 5/5 from me.
Thank you Rushabh.