Does exactly what I needed
While a bit expensive, it does exactly what I wanted. Weight and body fat measurement on screen, and wi-fi uploads to a web-based interface (Fitbit in this case) for history. I don't own any other Fitbit products but still find this a very useful tool, in my case for monitoring weight gain. The free Fitbit app on my iPhone also has a very usable food/calorie counter which I've kept records in for a week here and there to correlate caloric intake with weight gain and make sure I am getting enough calories.
Rating: 4 stars