I've been trying to assess the most efficient (heat output vs power consumption) heater for the office as there's no heat pump.

 

Have always used a Dimplex Rio 2400W oil heater which is OK-ish but in the cold snap of the last few days I've hauled out a Goldair convection 2400W fan heater to try as an alternative.  Yes it does heat the room up quickly but after an hour or so the fan just seems to create a drought and makes me feel colder so back to the oil heater.

 

I'm tempted to haul in a cheap micathermic panel heater (no fan assist) from a cupboard at home.  Is micathermic worth the effort in terms of heat output or stick with oil?