Been around making rubs a day or two.
Rubs, like sauce or like how to smoke meats is completely about figuring out what you want for a finished product and then establishing how to get there YOUR WAY. There is no one definitive way to make smoke. Its what is fun about it. When you think you have your way perfected you look for slight mods. or ways to do it faster, better manage the pit, etc etc....
I still believe in the 8/3/1/1/1 method. AND keep records so you know what you have and what you've already tried. 8 = any salt or mixture of salts or salt substitutes, 3 obviously sugar, again your choice or mixtures. then you have three more parts of any herb, spice or flavor modifier. These can be combined to equal one part. Make what you think you'd like and try it!
I also love trying some of those market blends. I have a box on a shelf in the garage that is full of these types where folks being nice have given them to me. I get a wild hair occassionally and dive right in.... the bad part is even if I don't care too much for them, I just can't make myself throw them away....LOL Then there are those I tryed and really liked. Currently I enjoy two store boughts', one for beef ("Tatonka Dust" from a board members bride's company) and one for pork called "Pig Squeal". I still use my own rubs mostly. Buying rubs to me makes the same amount of sense as buying canned air. I guess it does make sense but its just normally goes against my male ego. LOL
So make 'em, try 'em, buy 'em..... tell us what you think. I shared with you what I currently care for and I feel quite comfortable you'd like them too. I shared how I make them so you can enjoy building and trying your own. AND always be quite gracious about someone elses which they recommend or they are giving you.... you never know what you'll find.
Like everything else here, its just part of the fun of adventure! LOL..... Its always funny when you get the most outstanding rub you'll ever experience and can't get any more for one reason or another... its like walking the yellow brick road.
Have fun, and let use know what you find that is good!