I'm with parcher on the no sauce. I use dry rub only on ribs, usually cajun seasoning.
One thing I started doing this past summer was marinating the ribs in a soft drink solution. I have used Sprite (my preference because of the lemon/lime) and I've used Pepsi (very good also). I marinade the ribs in the soft drink with cajun seasoning several hours before cooking. It moistens the meat and the flavor is very mild. After removing them from the marinade, I put the spices on and then slow cook. One other thing I do is chip some pecan wood up, soak it and toss a little on the coals as the ribs slow cook.
Don't overcook the baby backs. Don't try to cook them too fast. Slow is the key. Most people cook the ribs until the meat falls off the bone. Watching the BBQ cookoff in Memphis this year, one of the contestants said that is overcooking. So now I slow cook until the meat starts to pull back good at the ends of the bones but not release and fall off on its own. At that point, it's easy to pull the meat off but it's not overly tough and dry.
When they are done, I take a commercial sauce and add honey, pepper (cayenne if I want them hot) and some more cajun seasoning. Stir it up and serve it on the side for dipping. Sweet tea, cole slaw, garlic bread and some baked beans and its time to eat.
I'm hungry. I want some ribs.