Timmy, you're problem is not gonna be what to use them on...but what NOT to use them on.
Here are some of my favorites:
Season-all: on everything!
Cherry - pork butts, ribs, chops.
Spicy Apple - pork butts, ribs, chops.
Pecan - beef, ribs
Sweet/Spicy - anything, esp. brisket and chicken
Sweet Seduction: chicken, ribs...about to try it on a pork butt soon.
I seriously can't think of a way you can go wrong. I tried the cherry once on beef. If the beef would not have been low-grade, I probably would have loved it.
Let us know - and post pron - when you try them!
Congrats - your cooking is about to become Simply Marvelous!
IMBAS Certified MOINK Ball maker and IMBAS Sgt. At Arms.
And now, brethren, I commend you to God, and to the word of his grace, which is able to build you up, and to give you an inheritance among all them which are sanctified. [Acts 20:32 KJV]