Can Pellet Fuel Institute certification help me select pellets for next season? I'm buying a few bags from different suppliers, comparing them with pellets I used this season (my first), checking web sites, and looking at comments here. I read the PFI specs on its website and I see how a manufacturer that follows the specs and gets tested would meet minimum standards. But there seem to be lots of good manufacturers not certified, so I won't make a PFI stamp on the bag a requirement before I buy. Other things being equal, does certification mean that the pellet quality is at least OK?