I'd go TP-Link HS110. Data nicely presented in an app, and power resolution better than the Kill-A-Watt.
UL certified for 15 amps.
You need to connect it to a 2.4 Ghz WiFi network and download an app.
https://www.amazon.com/TP-Link-HS110...s%2C223&sr=8-2
I'm very close to purchasing this whole home monitoring kit which includes 8 individual branch circuit sensors. It's $100 though.
https://www.amazon.com/gp/product/B0...57HPVTEJ&psc=1