I own the BlackCat model... It's great! I think this thing yields 3000 BTU which is pretty significant.

The current model has legs that you can pull out so the heater stands at roughly 45 degrees... I really like it.

It's slightly expensive if you don't intend to use it a lot, but still... it's a good buy. The SportCat and SurvivalCat are much smaller so be sure to evaluate your needs seriously. The BlackCat is good for car camping or for your home, but if you want to take the heater along for a ride in a snowmobile or ATV... the SportCat might be a better choice.