Being able to measure more than weight, and fitness tracking integration are two good reasons to consider a smart scale.
Focus on Fitness - Smart Scales
When it comes to Smart Scales you will find many options that priced very differently sometimes. Here are a few scales of interest for you to look at.
Check out the Fitbit Aria 2
Review of the Fit Aria
Introducing the QardioBase 2 Smart Scale-
QardioBase Smart Scale.
Review of the QardioBase Smart Scale
Tanita - A maker of both commerical, and consumer scales is presenting a scale called the IronMan.
Tanita Ironman Scale
Here are two more smart scales that you might want to take a look at as well.
Also check out the Nokia Body+
Also see the Garmin Scale