David,
First off welcome! I myself, am like you. I have a hairline that is cutting back as well. I have been trimming my hair with a zero guard for almost a year now and recently shaved for the first time. I enjoy the shaved sly look, my fiance does not. I am going to shave for a month and see what happens though. Either way, zero guard or shaved is the way to go. What a great look!
Have a great 2010
Andy