I bought this because I didn't want to mess with propane, as I would be using it on a fenced in apartment terrace.  It was simple enough to assemble but does require two people to do it.  Heats up very quickly and produces a good amount of heat but probably only to about 4 feet pretty much directly in front of it.  I reviewed a lot of other heaters before buying this one and this one seemed to be the best reviewed for the best price.  I also really appreciate that it comes with covers as I otherwise would have had to buy them separately.