I've heated with wood since I was old enough to tote a stick of firewood. I've run Ashley, Blue Ridge, trashburners and no-names. I've cut my share of firewood, split it and stacked it.
For the last 24 years, I've run a Hearthstone. Not the big one, but the next size down, similar to this stove:
http://www.hearthstonestoves.com/wood_stoves/heritage/
It's a mighty good stove, I heat 2000 sqft with it. Up north, I reckon it would heat closer to the manufacturer's claim of 1300 sqft. And yep, I looked at an Earthstove back in the 1980's...while the Earthstove of today looks nothing like the Earthstove of yesterday, the Hearthstone is still quite similar...which means parts are still available for my 24 year-old stove. I also think if something has been manufactured that long without significant changes, the company must be doing something right.
Soapstone
does not run like a plate steel or a cast iron stove. We're talking thermal mass...it takes awhile to heat up and it takes awhile to cool down. But even living in the South, I find it no problem, if you just mind your p's and q's. As with most stoves, burn good, seasoned hardwood and adjust your fire and burn times to meet your needs, keeping in mind that the stove will not produce or quit producing heat instantly...I've told folks you run that heater 90 minutes ahead of where you think you are, and it works just fine.
Whatever you buy, size the stove according to your needs, and buy a well-tested design from a reputable manufacturer.
Wood heat is unlike anything else. Enjoy it.
I do.