everything HIGHLY depends on the area you live in. in the larger cities or if you have only one best buy in a 100 mile radius and no other electronics store, the line will probably be long. if you want the cheap cheap items, you're going to have to brave the line.
that's why i suggested doing the drive by, or if you have bored teenagers in the house and nothing else for them to do... have them do the drive bys and call you when the line starts getting scary long.