I asked a local electronic store what they used to clean their screens with, and they took me right to the shelve where they stocked the Monster Ultimate TV Cleaning Kits. Not cheap, but it works. I'm using this to clean our glass TV screen, laptop screens, and my PC's wide-screen display (a top end Samsung monitor). The cleaner does not build up, and removes finger prints and other stuff that sometimes just gets on screens. I use the soft cloth that came with it, and I keep that cloth protected when I'm not using it so that nothing abrasive ever gets on it. Great results. I would imagine that most of the Monster cleaning liquids would yield good results, but this one specifically for me is doing the job!
This stuff works great - no streaks. iKlear left streaks and is difficult to use. However, this stuff worked the first time and left no streak. Somewhat expensive, but if you want a clean screen, without streaks, this is the stuff to use.