Switched over from MWP's to Cubex and I have to say I'm very impressed. The heat is fantastic. It's been below freezing and with the heat range at 4, the 2nd floor of my 2000sqft colonial is at 74 (stove on 1st floor). With the MWP's, my upstairs hovered around 69 and that was with heat range set at 7 or 8. The ash is noticeably less as well. I'm about 5 bags in and there is little to no ash accumulating on the rim of the burn pot. With the MWP's it would be close to an inch high by now. I had no issue with the Maine Woods Pellets and would buy them again, but these Cubex are awesome. Probably just stating the obvious, but wanted to share my experience.