I have seen differences in opinion regarding the replacement of the stock antenna on several forums. Although I listen to my iPod 99% of the time, I was never too keen on the stock FM antenna and how it looks on the car (just my opinion). After reading some recommendations on the Internet, I decided to get a shark fin antenna from Visualgarage.com. The sales person was very helpful with my questions and although the site said it can take 2 to 3 weeks for the order to be shipped, I received it within a week. And the antenna was painted to match the factory color! Took me about 30 minutes to install it and I did not noticed any loss in radio reception.
Attached are a few pictures of the car before and after the installation.