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I am not a big fan of Dizzy Dust - to salty in my opinion.
I have always purchased my spices in bulk and I make my own rubs. Most of the store bought rubs are too salty or contain additives I cannot pronounce or that I am leery of. I mix by weight and make adjustments by percentage. I have been doing it so long now that I hardly need my recipe lists to make my favorite rubs or marinades. Buy a scale that measures in grams, it will change the way you make stuff if you use common sense.
I agree with Sam. It's really not that hard to make up your own. You can then adjust to your own taste. By just reading the previous posts what's too salty for one isn't for another, same goes for sweet and hot. Emiril and Steven Raichlen have cookbooks with some pretty good rubs but like any recipe I just use that as a guideline and make it to suit my taste. When I've got it to where Ilike it I'll make a good size batch, put it an empty spice container and keep it in the fridge. That way I'm ready to cook without it being an ordeal. Have fun with it and good luck.
Tim in SoCal