A fitbit sits on my wrist as I write this and I had considered buying that scale too, if I could expect it to be accurate (this is my biggest issue with my scale).

If and auto updating scale means you remember to weight yourself regulary then that is very good investment.

I was mostly writing for those who would hesitate to purchase such an expensive scale especially since I believe owning and using a scale is so fucking important. Not knowing the number means you are too likely to let your mind play games with you and end up having to lose a ton (hopefully not literally) instead of being warned in time.