Well I'll go against all the above opinions and say that my preferred 'stove' when camping is an open fire and a couple of cast iron camp ovens.
However, I acknowledge that the pleasure of a nice cooking fire (which more often than not) developes into a nice campfire to congregate around when you're finishing off dinner with a wee drop of Port, has or is being denied in many places - especially NP's.
So as a backup/alternative to the above, I have over a period of decades tried most types of camp stoves.
LPG is quick and easy but pretty useless when trying to boil the billy for an early morning cuppa on a cold and frosty morning when the temperature is around the 0 deg. mark. The topping up of the gas can also be somewhat problematic and expensive and ideally requires the carrying of a second/backup gas bottle.
I tried the twin burner dual fuel (Coleman) stoves and although they produce heaps of BTU's, I was unimpressed with the lack of independant control of the second burner due to it being slaved off the primary burner.
So what I've ended up with is two of the small single burner Coleman dual fuel stoves. This gives me plenty of versatility in the way I use them (including independant control of each burner) - from simply using one to prepare that early morning cuppa to using both of them placed under my normal fire grate to cook a baked dinner such as roast lamb and vegs. The only problem with them was the small size and corresponding instability for large pots or camp ovens, however, I have overcome this by using my large fire grate when a number of pots are required and I have also made up a smaller 'fire' grate for use when preparing those 'one pot' meals.
And as I've indicated in another thread, I like to have most equipment that I carry capable of dual roles so my fire grates (due to the simple design and lack of sharp edges) can also be used as sand or mud ladders when a little extra traction is required to reach the campsite. :D ;)

