There are so many good commercial sauces and rubs now that sometimes it'd tough for me to pick just one or two. A few of my favorites are....
Slap's BBQ - ribs, pork
Blue's Hog - chicken, vanilla ice cream (not kidding)
Kosmo's OP X-1 - brisket
Clark Crew Original - brisket, ribs
Baby Huey's Sweet Fire - ribs, pork
There are many others, but these are the one's that stand out.