Another Welcome HM. Guess it depends on your local, or wood/coal availability as to which would better suit your needs. Both have their benefits and drawbacks. But seeing you've joined a "coal" forum, you can see which direction your advice or recommendations will swing from. I also have a Thermopride forced hot air oil furnace, and in it's day it was very effecient. It's almost 40 yrs old now and is showing its age, but it still performs well. Problem is when OPEC, Saudie, or who-ever else is selling oil, gets gready, that's when the solid fuels begin to shine. I myself am a little biased, and hope you go the antique coal burner route, but to each his own.
But in the interim, I don't know why your sucking down electricity, if you have that Thermopride in the cellar. No mater, enjoy he forum, and good luck with your stove hunting.