Here's the scale I use. It's been shown to be fairly close to DEXA body scans which is the gold standard. $400 is steep but if you get motivated by numbers and think it'll help you stay healthy, it's worth it. Also if you have other family members who will use it.
The ultimate checkup of your body, for accelerated progress in physical fitness and the power of a clinically validated electrocardiogram. - Body Scan | Withings