how do you heat your shop/garage

our big garage has an oil burner in it and for the little garage which is where my junk stays i use our salamander heater when its not on a job thawing out the floor like the past 2 weeks!
 
I have a propane heater like this one. Will heat my 22' x 24' shop from freezing to 75 in about 10 minutes.

Propane%20Heater.jpg