It's one thing for a theme to look good but don't forget the SEO part. It's something that many bloggers forget that can bring more traffic from search engine. You want to be read, yes? http://courtneytuttle.com/seo-wordpress-themes/ I got a few of then on 1 Cool File in my blog themes/plugins Court will take an existing theme and correct it, remove junk ... and make it SEO friendly. He has 90 themes now and free. Btw, it's a blog worth reading. I wrote this recently: Are Bloggers Lazy Or Just Lacking SEO Vision? I did not include themes but it's another example I should had added.
Wordpress is great, it has everything you need - design and seo wise. It just makes life so much easier. Good luck! Richard