Nothing to really add other than to confirm what others have said.
Electric heat is electric heat. It doesnt matter weather it is resistance, infared, quartz, oil filled, etc. It all puts out the same BTU's per given watt of input. They are all equally efficent.
And if you already are using a heatpump, those are about 3x's more efficent than any other form of electric heat. So one of these would cost you more to operate.
The only POTENTIAL savings is the ability to lower the temps in rooms that you arent using down to 50-60 degrees, and only keep the room you are in warm with one of these. But then again, a $30 walmart heater will do the same, just not look as pretty.:2cents: