Adsense - Images or Text

I decided to test a couple of image ads on some of my blogs just over two weeks ago. Google is pushing this option quite hard and I think some of the banner ads are quite striking. But I found that they were not attracting a higher clickthrough rate, and were really making the pages look a bit too busy, so I am reverting to image ads.
Tags:blogging, Affiliate Marketing, Adsense, ebooks, Business Advice, Business Tips, E-Mail Marketing, Google, careers, internet+marketing, technology, weblog, page rank