I read about the Vair elsewhere too, but it seemed people were happier with Puma, mainly for the speed. My normal time to use this would be after a day of hard hunting with a long drive home and the last thing I want to do is delay laying my head on the pillow waiting for a compressor to catch up.

Physically, what size of tank are you talking about for the #20 CO2. I am guessing the size of a welding tank which would make size/weight and issue.

The Warn Power Plant sounds like a great choice.......but to much $$$$ to justify.