Asking for experiences with Sense Power Monitor

Configuration
1

Hi all!
Just noticed that the Sense unit has a good discount going on, $30 of until October 2nd.
I have been wanting to install one, but after reading all the reviews, I am unsure.

Any users here that want to share their experiences?
Have things gotten better over time?
Is it only total power usage and device on/off status?
Will it show voltage? Power quality?

2

I know this is old, but I have similar questions. Is the Sense Power Monitoring device accurate enough to to identify a specific TV? And other devises? Can HA integrate with Sense and activate an automation based on the TV turning on/off? Or is it more reliable to use smart plugs?