Yeah, I use the Bodymedia Fit armband. I bought it on sale from Amazon last year. It does come with a $7.95 monthly fee as well to continue to access the data on their website.
If I had to do it over, I would likely go with the FITBIT. It doesn't have the recurring cost.
What I like about the Bodymedia armband though, is that it "measures" calorie burn in addition to steps. I like to see that I torched 800 calories in a spin class and that I burned up 3000 calories in a day. I'm a data hound....I track & measure every exercise with a GPS, heart rate monitor, and my Bodymedia fit armband.....it satisfies my inner geek!