In my experience, meat chunks sold as "stewing beef" are very lean and cut from the round. I prefer to use cuts from the chuck. I try to get a large piece of chuck in cryovac from a place like costco or sam's club then I cut it up myself into cubes. Since the chuck i s actually a few different kinds of muscles the stew ends up with varying textures, which I like. And with the trimmings I make beef stock (by also adding beef necks from the local ethnic store to get collagen, very cheap). If you want your meat all one texture you can just use chuck steaks. Usually anything around the blade is best. Again, make some stock from the trimmings.