The best stove out there for cold weather use. Low maintenance. Yes, it's loud, but at least you know it's working!
Not really any. However, if you're new to this type of stove figure out how to use it before going on a trip. It does take a little time to get use to. I figured it out step by step with the intsructions, maybe a little too slowly, and before I knew it my picnic table was on fire! Woops.:)