I have had two Sense Home Energy Monitors for well over a year now. I have been totally frustrated that the monitors will not detect things that we use frequently in my home and you cannot simply tell Sense what is on during a low electrical usage period. My worst frustration is that Sense cannot tell the difference between my microwave and my wife's hairdryer.
The Sense support team is not very helpful with this issue, and they have been working on it quite a while. Don't expect to actually talk to someone from the company. They basically force you to send them an email. They respond, but their response has not let led to a solution for my microwave and hairdryer. There are numerous other things the devices have not detected over the years. Reporting stinks too. Exporting data to a spreadsheet would seem to be an easy thing to do, but not with Sense.
Bottom line, very poor product and certainly not worth $300 with its current functionality.
Bottom Line: No, I would not recommend this to a friend