I just upgraded from 3.6.0 to 3.6.7, and my current style had a lot of errors, so I reverted to the default one.
The style(s) I'm thinking of using are the CA Evo ones, as per this link:
http://www.webhostingtalk.co.za/vb/index.php?styleid=13
And now that you mention a logo, I need a logo as well, to kind of define the site a bit

What would you suggest? I like "clean" / "simple"