Withings Body Scan

The Withings Body Scan scores 72/100 and is the most advanced smart scale on the planet — which is exactly the problem, because it costs $499.95 for a bathroom scale.

6-lead medical-grade ECG, segmental body composition for each limb and torso separately, nerve health assessment, vascular age estimation, and 12-month rechargeable battery. Build quality scores 90/100. Performance at 85/100. This thing measures more health parameters than most doctor visits. It supports 8 users with auto-recognition, so the whole family can use it.

But the value score is a rough 45/100. That's because you're paying premium-smartwatch money for something you step on once a day. The optional Withings Health+ subscription ($9.95/mo) unlocks the really deep analytics. ECG clearance varies by country. And the learning curve is steep — there are so many metrics that most users won't know what half of them mean.

At $499.95 (up from a previous $399.95), it's actually $100 above its lowest recorded price. "Fair price" momentum, but the price has been climbing, not dropping.

Bottom line: Wait for a sale back to $399 — at that price it's a worthwhile investment for biohackers. At $500, it's a tough sell for anyone who isn't obsessively tracking their body composition.