I know for me personally and my lifestyle I would have no use for a heating appliance that couldn't evenly heat my home for more than ten hours per load I'm gone to frequently to feed an old unit every. 5-6 hours
In the video I stated I only filled it up for purposes of the video.
I can assure you that it heats my home for more than 10 hours.
I awake every morning at 4:15 and reload the stove while the dogs are out "for business".
I make sure to get a good burn on the wood and I adjust the dials before I leave for work at 5:15.
I get home from work at 4:30. There are still coals left with which to start a fire. The fan is always still blowing as well.
So that is just a tick over 12 hours. On 6 splits. House is usually between 69 and 72 depending on how cold it is. Sometimes I wait until just before bed to re-light the fire. I don't need to have the house at 74 all the time.
Again it depends on the weather. If we get a day in the 30s I will only load up three splits at a time otherwise it gets too warm. Yes it means lighting multiple fires but it seems as though there is always a few hot coals buried in the ash somewhere and if I dig 'em up and throw a few splits on them combined with a blast from my weed burner torch I have a ripping fire within 2 minutes.
I have no doubt that a stove like yours or Dels would be more efficient but at a cost of $2500 for the stove and a re-lining of my existing flue to a 6" I am looking at roughly $3000 and I'm sure there are a few other added costs but let's just say 3K. Now Del thinks I would save about a cord of wood per year which in my neck of the woods had a value of about $150......... $3000/$150 = 20 years.
I honestly don't think I'll even be in this house in 20 years but regardless that is a long time to recover an investment.
Sure you could say that it saves me time and fuel and energy in collecting that cord but then I lose out on being out cutting, splitting and stacking that cord as well. (Which I like very much)
Now as far as the glass? Yes I would like that. Heck If I had any welding skills at all I would make myself new doors with glass in them. First off I like the view, secondly it would make fine adjustments of the air control knobs an easier job and thirdly it would just be flat out cool looking stove!
Now lets say I move to a new house and take this stove with me and the floor plan of the new house is not like this one then chances are that it would become a room heater and not a house heater!
Don't get me wrong here. My intent is not to bash on your stoves but just to show what an old one is capable of when used correctly. The stove is not so efficient so the user must be!