I was just doing a google search for bulk smoke woods and I came across the site http://www.cookinpellets.com that had the following to say about the various types of smoking woods.
"We have decided to offer only 1 type of pellet. It is our Perfect Mix. And occasionally we will have 100% Hickory. We have done extensive testing with loads of different meat and types of pellets. We have talked with some of the biggest competition teams and restaurants that use pellets and they all agree that a good MIX is the answer! The truth is that most anyone can't tell the difference between any pellet variety unless it is 100% Hickory or 100% Mesquite."
Is that true? Also, they claim to never use any oak as filler in their pellets, but isn't oak one of the more popular smoke woods next to hickory and pecan? Anyway, like I mentioned before, I only have experience with two different woods so any advice on the subject would be appreciated.