I had the Parlor 3000 non electronic ignition version and was very satisfied with it. It ran consistently with never a problem or issue. The thermostatically controlled high and low system worked perfectly for my application and when connected to a programmable thermostat, allowed even better control of the volume of pellets used, and improved control over the heat regulation when I was and wasn't there. Build quality was excellent - far superior to the Quadrafire Castille I bought at the same time (the quad interior started to rust after a couple of months of non - use, where the Thelin never had a hint of corrosion). I highly recommend the unit.
The Thelin was installed in the basement - venting into 40foot chimney. The Quad is in the kitchen and using direct vent method - straight out the back wall. Both utilized at same rates, durations, and time periods, but it is the Quad that seemed most affected by environment during off season - the cast iron pieces in the back were the most affected. I now make it an annual ritual to sand and high temp paint the interior to keep it looking good, but I never had to do that with the Thelin.