I always thought one of those infared heaters would be nice, but the forced air vented would probably be better...unless your painting. That 200K one is just to get the principal across, and yeah that was heating a 2 car garage that was well insulated so that probably explains what the windows would fog up so bad

Either way, I think you'll just be better off heating when your workin only. Light her up an hour before you wanna work and you'll forget all about the crappy snow blockin the garage door.