I am not a cook, with an oven you can get all sorts of features, I know my stand alone belling has 12 options from closed door grilling, fan and non fan and heat from different points, in many ways returning to the control we had with the old solid fuel, push the damper in or pull the damper out smoke went up the chimney just the same, but it heated the oven very different.
With all the new controls I thought a Mrs Beeton cook book would be ideal, it was written before gas and electric ovens came out, so should say how to heat the oven. Well some one must have rewritten it as it has nothing about dampers and has Gas Mark setting.
So although we use the closed door grilling most the other features are unused, I am sure school kids today are taught when to use side heat, bottom heat, top heat and back fan heat, but as a boy when I went to school boys did not even do cooking never mind be taught how to use an oven.
Some ovens heat up and cool down quick others specially range cookers as slow to change, with built in oven in mothers house we have to warm it first, it is under 3 kW but at home the stand alone cooker has an oven with multi elements and we just stick the food in and switch on at the same time, as it heats up so quick.
Now as electricians how do you really expect us to know which is the best oven, some the shelves can fall out, others have runners like a filling cabinet and no way will food end up on the floor.
Not sure about Witch I think the over would need to be rather big to fit a whole Witch in one?