A watt is a watt. There is no magic in creating more heat from one method Vs another of creating heat by running an electrical current through a resistor no matter how fancy it is packaged. Aside from a pretty cabinet, timers, and more elaborate thermostats to turn the heating element on and off, a common $20.00 "Milk House" heater will provide exactly the same amount of heat as any other resistance heater. That includes oil filled storage heaters and quartz element heaters. While each kind of device may blow, focus, store or distribute the heat generated from the power it consumes differently, the electricity (power) that each kind consumes will generate exactly the same heat output (BTU). The marketing claims that state that you can save "up to 50% or more" (whatever the heck that means) are just that, marketing claims. They are based on moving the heat fancy source into the room that you are in and turning off the heat in a comparable size room. If one only heats half of the space what kind of saving should one expect? Deceptive? Absolutely! Simply omit or bury that little detail in the fine print and the marketing claim is then not exactly false. If you like the nice cabinet in your living space or if you have kids or pets that could come in contact with a hot toaster-like heating element in an inexpensive milk-house type heater then a model that distributes the heat evenly or gradually may be in order. Just don't expect to save any money by getting a nicely packaged electrical resistance heater unless you turn off the heat source in other areas. That is where the savings comes from.
I use a small oil filled electrical heater to supplement the heat in our guest room / wife's sewing room. It looks like a small radiator on casters. It provides up to 1500 watts of heat (exactly the same a a hair dryer) evenly with surface temperatures that are safe enough to be around grand kids, pets and even a piece of paper that might accidentally come in contact with it. Those heaters are not objectionable to look at and cost about $35 in season, even less off-season. I suggest that thing will work every bit as well as the Eden Pure thing or any other similar device, and it costs a tad less to buy and the same to operate.