Thanks dude! I have a really simple basic rub. It breaks down like this
8 parts brown sugar
3 parts kosher salt
1 part paprika
1 part an equal mix of cumin, garlic powder, onion powder, chile powder
From there you can really add and mix in what ever you want.
I also foil them (total 3-2-1 method guy here) and this is what I do when I foil. I use 1 stick of salted butter, cut in half lenth wise and broken up, with half going under the ribs and half going on top. I also add some Maple syrup onto the top and bottom and pour in some apple juice.