Hi David
You mentioned paraffin in your message. We have an Optimus paraffin stove on our Ballad. It has a two burner hob and separate oven. Main advantages are: both the burners and the oven are very efficient, no gas and therefore no safety worries in this direction, cheap to run, fuel readily available in UK at least and it is quite easy to carry enough spare fuel on board.
Disadvantages, equipment is expensive to buy new (but ours came with the boat), burners need pre-heating and the pre-heaters can be temperamental, flare ups if insufficient pre-heating is used, there is a smell and there is no easy automatic heat control on the oven.
In practice the stove just takes a bit of getting used to and we have stuck with paraffin for many years on this boat (and the previous one.) Hope this helps.
Chris