Well, it turns out that the screen surface of the Gen5 iPod is JUST as prone to hairline scratches as the screen surface of the nano. The next time I buy an iPod, I will be thoroughly examining the screen before anything touches it... so far as I can tell, there is NOTHING that you can use to clean the screen that won't scratch it in some way. EDIT: I just found out why this is, from an engineer who works on cleaning products for iPods... not sure if you all know this, but the new iPods (nano and 5G) use a polycarbonate front surface, rather than the acrylic surface of the older iPods. Polycarbonate is better than acrylic in MOST ways, but because it's softer than acrylic, it scratches VERY easily. There's virtually nothing that can clean a polycarbonate surface without scratching it... even the engineer I spoke to said that his 2-day old 5G has scratches all over it... and God help you if you have a black nano or 5G. Dammit, Apple, 'fess up to the change and either switch BACK to acrylic, or give us crystal-hard screens next time. This is really pissing me off... my iPod's one day old and the screen is COVERED in hairline scratches.