HHPP32DB I worked on one that had no stop for the auger motor and it worked but not much heat! The guy bought it from a stove shop with some missing parts and the control panel went too. It took time but I fixed it nice three years ago and it is still working good! It has 2 good high temp nylon auger bearings and a 2 RPM auger motor that last a long time. It has the largest hopper I have seen, 300 lbs of pellets or about 7 bags! Also with an upgraded Acutron IV control panel besides running it Manually, you can run Auto-on/off or Auto-Hi/Low on a T-stat with a swing setting to save more pellets too! Don't need a hopper extension, but you may need a ladder if you are short and it is on a raised hearth! LOL See review here. Pelpro HHPP32BD Pellet Stove Review