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The Mr Buddy i think would be a better buy. You have the opposition of using large or small propane tanks. With the others I'm not sure you can use a small the tank with out it falling over. You would have to purchase a hose to connect a Buddy to a large tank. On days that you want to travel lite this is a nice opposition.
You can catch the Big Buddy on sale at times. I believe Princess Auto had them on for less than $200 last year (I think $168, but can't remember for sure).