Question about Withings Body Comp

I'm doubting about buying this one " Body Comp" or "Body Smart". I checked here and there, but still I can’t decide if Body Comp is worth the double price comparing to the Smart one. I know already that accuracy can be not as good as the ones with the arms sensor (as the Body Scan), that is why I can't find what is better in this one to go for it. For me, consistency in results is the key, considering accuracy in the % values is not given. Honest review from users is what I'm looking for

I can't judge the Smart as I don't own it. However, the Comp is relatively accurate (in my case 1.5% deviation from the Dexa scan). The results are definitely consistent so trends over several weeks are clearly visible with no unexplained jumps (I weigh myself in the morning before I have a drink). However, I would say that the scales are only worth the extra money if you are really following a consistent diet/weight loss programme and counting your calories accurately. Then you can prove the results of your adherence to or disregard of the diet relatively well with the scales. However, I would not recommend it for a KFA over 25%, as it is very inaccurate and inconsistent. Hope this helps :)