I have (well my girlfreind has) a 3 burner LPG coleman stove. We both have a small self sealing LPG single burnerstove each for hiking and the likes. I have a cast iron camp oven and a single burner LPG stove plus we have one of those all in one cartrige stove things too and a BBQ plate that goes on top too - works a treat!
Depends on what we do and where we are going. Generally take the three burner and one of the small self sealing units (as backup). if going for more than a couple of nights then the oven definately comes. Single burner is good when travelling a lot. We use it a lot fishing.
Also have a pair of the Dicksmith 12V stoves (was going to mod 1 to have two elements never got around to it - dont think i really need to either) Also have a pissant 12V kettle and frypan and pot. None of which work well
. Got them for a camp where you werent allowed gas. Would advise any one to save your money. Kettle works okay(ish) but the pot and frypan arent nearly worth the $16 each. The stoves how ever work brilliantly for reheating food or cooking pies, sausage rolls etc. Will definately be taking them away with us any where we need to cook when theres a TFB