I have a 2 burner propane that I expect to use the most often on a day to day basis.
I have a medium sized alcohol stove. Like the big brother of the Trangia. I think it was designed for boats.
I have a collection of older Coleman equipment. A 2 burner stove, a two mantle lantern, and a 1946 Coleman 530. All of these are set up to burn white gas and gasoline. The 530 will also burn diesel, lamp oil, alcohol, kerosine, and some sort of paraffin fuel that isn't available anymore. It would probably burn carbide like a miners head lamp. I tend to look at things in very simple terms. You could beat someone to death with that "Pocket Stove", render the fat from their body, and cook them in to a stew.
If I had to chose just one thing, just one form of stove for the rest of my life it would be something like a cast iron braizer, maybe a large dutch oven, a four gallon rendering pot maybe. I mean, if it had to last me the rest of my life a stove probably would not be my first choice, it would be thongs that will last a lifetime or two that I would have no hope of replicating on my own.
The other problem with questions like this is that you must define "best" and the parameters that it will be used, availability of fuel, types of cooking that will performed, etc.