D2r was good but at least I my experience it has dsync issues way worse than the original. I tried it again maybe half a year ago and it didn't seem to have been fixed

Keep in mind also that the energy you save was previously heating your house. so depending on where you live, how you heat your house and how well your house is isolated you could be saving close to nothing

Also the link someone else posted says it has life support for 96 hours

What's the official one called? Is it the one called jerboa? As a rif user I can get used to this