I've had it for about a month and a half.
+ Pros.
Easy installation (with care and knowing what you're doing).
Shows current consumption and keeps a history (Day/Month/Year).
- Cons.
In the history, the smallest resolution it has is per hour. (It divides the day into 24 measurements). I would like to be able to see more detailed information (the current consumption updates every few seconds).
I didn't find a way (I haven't searched much yet) to get the recording data (either the current or the history).
It would be good to be able to obtain them to generate the statistics you want.