First bag was Treager Blend, $20 for 20 pounds at Home Depot. Was okay. Then 20 pounds of Pit Boss blend from Lowe's for $10. Not very flavorful.
Read a lot on the internet about pellets. Decided on Lumberjack.
Went to a grill store and talked to the lady. She said don't use blends. Use pure wood. Recommended oak. She says Lumberjack is a great pellet. I bought a 20 pounder for $16. Excellent flavor with minimal ash, although I vacuum out the smoker after every use.
She also told me I was setting the temperature too high. I was cooking at 225° like a normal
Weber Kettle which is what I was used to. She said for the smokiest flavor, use the grill at it's lowest setting, in my case its 150°.