I'm another fan of the Fitbit. I wear it every single day and makes you more aware of how active you are. It is really a good motivational tool. Since I got it, I started parking all the way in the back of the parking lot (which helps me towards my daily step goal) and I use the bathroom on another floor which forces me to walk up a flight of stairs every time I go to the bathroom (which helps me towards my daily flight goal).
I use myfitnesspal as my calorie counter and I also input my exercise into it. It syncs my meal and exercise info with the fitbit. It is really helpful.