I am looking for an efficient woodburning stove for my lounge. I have
come across industrial looking wood burning boilers that gasify the
wood in a top chamber with the flames created underneath in a second
chamber.

Is anybody aware of a high-tech design of cosmetically acceptable wood
stove that perhaps burns the wood in such a way as to increase
efficiency and reduce waste product?

Ideally I would like it to be thermostatically controlled.