Firstly the machine mart stoves. They do not carry spares. big drawback.
I got a Sun stove from Ebay last year, identical to the hotspot but cheaper....its easy to light, air control is good, got a griddle plate with it for BBQ, often kept it "in" all night so easy to get going next day, burns wood and sawdust equally well,
But at the heat output of 4kw (I think) for the smallest size, IE same as smallest Hotspot, which is roughly 12/14000 BTU it just could not heat my place up unless it had been on all day.
So I gave it away to a friend who is setting up shop in his garage and it should be fine there.
I am going to buy a stove ( cast iron) before next winter, aiming for 25ish KW and seen some good ones with airwash and available spares, firebrick lined etc for the same money as the machine mart ones.
So for the time being its back to jet heater and a 47 kilo propane tank.