TDW - believe it or not - I do heat with wood now ( retired ) - otherwise my Wynne electricity bill would bankrupt me. Modern air tight stove, 3 cords dry hard wood in drive shed, circulating fan. The trick is truly dry wood .... 
At the time I built this particular house we heated with oil and - yes the savings were real, recovered the extra material cost within a year ( I kept track of building costs ) ! Later added air conditioning - very little run time and minimal $$. ALL my neighbours had heating bills at least double mine and complained !