I've used Windex and/or vinegar and demin mix for over a decade with no issues.
I think MPC in an old magazine (from like 2004) highly advised against WinDex or any ammonia based cleaner.
I use an LCD cleaner solution from Monster (the only thing I actually bought from that company...) with a microfiber cloth. Yes it works just fine and I've used it on glossy displays, so I don't know where this "microscratch" thing you're talking about comes from (are you sure that cloth didn't catch anything?). In lack of an LCD cleaning solution, diluted rubbing alcohol with a cotton pad or something works just fine, assuming all you're doing is cleaning off the grime and oil from the screen and you're not trying to get off old crusty sauce.
Also you're not supposed to apply your cleaning solution directly onto the screen, you're supposed to wet the cleaning cloth, apply it then, and the get another to dry rub it off. This also gets around the issue of accidentally spilling the solution between the bezels.
Well... That depends on which type of gloss finish. Sony, being morons, clearcoated the ps3, and polished the hell out of it, anything will scratch it. The PS3 is a perfect example of something that should have Gorilla Glass... Complete morons, i tell you. A piece of dust rubbing up against the surface, with any material on the other side, microfibre,lint-free, you name it... They really weren't thinking... Wonder if Corning will make you a custom shell for something like that, if you pay them an appropriate amount of money? Hhhmmm... Gorilla Glass PS3 shell...
Anyhow, back on track, i found these... I suppose i could go and get them...http://www.bestbuy.ca/en-CA/product/ant ... 39e0b0en02