1st of all ,you can't just throw height speakers up and think your good. Especially the guys that say they can't tell a difference. You have to run audyssey,use and spl meter to dial them in and use PLII height or Audyssey DSX setting,otherwise they won't even be on! They do make a significant difference. If your using small satellite speakers,you might not get enough sound out of them. But if you use matching speakers,or bookshelf speakers,you will absolutely hear a difference. The dialog comes from the center and the height speakers. Now is sounds like the whole tv screen is filled with dialog. You need to match the sound level of the center with the height speakers or it won't matter.