What would work better and not use a **** load of electricity? I was either gonna get a 700w mini oil heater or 120w radiant panel. I'm not sure how well panels work or if I would need more then 1. I used to use a regular size oil heater in my own room before but I know having that I'm all day and night the electric sky rockets. I have a insulated night box he sleeps with a cme in it at the moment till I can figure what would work better. Appreciate any ideas on other products that you guys use for winter