Bought one of their cabin heaters years ago - pressure kerosene. Used it numerous years with a couple of rebuilds of the burner. Parts are becoming harder and harder to find. Used it this year and there was a mini-explosion, had to check if I still had eyebrows afterwards. Haven't used it since. Force 10 offers a propane conversion for about $250 - not sure if I'm ready to go that way (as in make the change or leave the planet). Kinda torn, as it's cut into my early/late season sailing.
Considering an Espar hot air/diesel unit - friend has one on his boat and it's very nice. Turn the switch, hit the button, and hot air comes out the ducts - VERY nice when you're shaking from hypothermia. But, that's big bucks - at least 4x the propane conversion, but probably 4x better! Decisions, decisions..