The best oil filled radiator is really a subjective judgement of this kind of electric heater. However if we define what we mean by "best" then we are able to change this subjective opinion into a more objective and quantifiable discussion of these types of heaters. We are then able to discuss in a rational manner the good and bad points of particular heaters. Some of these are portable heating units while others can be mounted on the wall. So the requirements that potential users have will to a large extent determine what features they will look for in whatever heating equipment they decide to purchase. Cost is also a factor that must be considered. To some potential users, money may well be no object, while for others, the low cost of many models of oil filled radiators is a key factor in their attractiveness.

Many De Longhi heaters are relatively cheap to purchase. They also have many features that other more expensive models have. These include thermostats and 24 hour timers. A very useful feature that many models like the DeLonghi TRD0715T have is wheels that can be attached to make moving the unit around the house much easier. It in effect becomes the perfect portable electric heater. Dimplex OFX heaters are a different style of oil filled radiator. These are much thinner and can be wall mounted. Although they are slimmer, they are actually heavier than the De Longhi model. On top of this they are much more expensive to purchase initially. So it really depends upon what kind of use you want to put your oil filled radiator to as to which style is more suitable.