I like 7-bone best. Nothing like a good 7-bone that has been cooked long and slow wrapped in foil. Happily I found a nice butcher who is willing to leave the bone in mine.
7-Bone is my favorite, too, but is hard to find here. Other places I've lived, it was the preferred cut.
One that was new to me here is an "English roast". It also comes from the chuck, and is very popular in this area, unlike the 7-bone.
Check out this site; it shows where each cut comes from, what is is best for, what its downfall is, and what to substitute for it:
http://www.foodsubs.com/Meats.html