One of the biggest things I miss about my old home is the wood insert..

I had a Quadrafire insert that would run you out of the house...The key to any good wood burning fireplace/stove is placement...A centrally located masonry fireplace with an insert will perform with most any free standing wood stove for the fact the chimney is a lot of thermal mass...Efficiency goes out the door when the chimney is located on an exterior wall or even worse on the outside of the home...

Was just sitting in what my wife calls our sun room yesterday telling her it would be a good place for a soap stone stove..