I own a garage in a block which has power to it. My plan is to install a multi gym in it however its bloody freezing. Can somebody recommend a good electric heater which is low cost to purchase and run but also doesnt take forever to heat up. It doesnt have to be really hot just room temp or less would do. Ive had a quick look in Argos but theres too much choice Convector heaters,Oil filled rads,Slimline pnl htrs what would you choose?