Naturrific Q salt is probably my most used, all purpose seasoning. I would say I grill with it a lot more than I smoke, but I do also use it as a base for a more traditional BBQ rub quite often.Their harvest brine is great too. Just today I got some hot salt from them and can't wait to try it out. Lots of potential. I have not tried any of their other rubs yet.
Oakridge BBQ takes up the most space in my cabinets (and closet). In fact I have a tote dedicated to just Oakridge stuff. Smokey Chili Lime, Spogos, Dominator and Game Changer brine are probably my most used from them, but I have and use many others as well.
Plowboys Yardbird is a given. Other honorable mentions I toss in the mix are Killer Hogs, Meat Church, Sucklebusters, Simply Marvelous and Kosmos.
Sauces, I'm always trying new things and can't say I have a favorite go to sauce yet. Nothing has blown me away, but there are so damn many options I have not tried yet. It seems I use them less and less nowadays.