Nick has a good point, it is crucial to keep the pellets dry. The other thing I do is to get rid of the dust and small particles before I store them in a sealed container. I sieve mine through a 1/4 inch screen before I put them in my storage containers. This eliminates all the dust and fine particles that can cause havoc with auger. Through my time and different brands of pellets It is hard to say which brand I have used has the most dust and particles. It depends on how they were handled before I purchased them.
I was at my local ACE hardware and needed a bag of Apple, they were out in the front of the store so the store employee took me back to where the pellets were stored. The pallet they were stored on must have been 20 or 30 bags high. I thought to myself, I feel sorry for the customer that gets those bags on the bottom.
I currently use Pit Boss Comp, Traeger Apple, and a fruit wood mixture that came from Cosco, all have worked fine.
Bottom line, keep your pellets dry and clean and you should not have any problems.