Guy,
With all the great products out there, we have found that experimenting with commercial products has been good. I had to get over the pride thing too b/c initially I thought that if you weren't using your own stuff you couldn't lay total claim to the victory. That's all BS. Of course, we add things too. Heat, sweet etc.
We are fairly new to this competition thing, and the only sauce that has been our own is the recipe we use on pulled pork. Everything else is some variation of a bottle brew. Rubs are another thing all together. We have a Mild Rub that is used for catering. In the past it has been successful with cayenne added for pulled pork, and brown sugar added for ribs.
In no way do I feel qualified to offer advice, but every now and again we get it right and take a trip to the stage. The best advice I received was to layer flavors, and make sure that the rub and sauce compliment each other.
You guys were nice to meet @ Harpoon. Wish we could have spent more time talking about cooking. Thanks again for the tour of your battle wagon and the Spicewine. You've got me thinking....
Mike
Giggling Pigs BBQ Co