@MarkOne
Well, considdering evidence presented recently, that 1/3rd of people can't tell the difference between 48kbps and 256, it'tsnot all that surprising. Granted the sample size was so small I'd barely call the survey science, but it's been done over and over with different groups of people for years with similar results. http://crave.cnet.co.uk/digitalmusic/0,39029432,49303980,00.htm
However, and I ask this in all seriousness, when exactly have you compared an iPod playing a lossless AAC file to any other player which using the same headphones on both for a fair comparrison? See, if you're going around stating that a 128kbit audio on stock headphones sucks, well, you're pretty much right. It's good enough for people out and about, in noisy places, and where other activity makes the quality difference irrelevent. Yes for an Audiophile this sounds glaring vs what you might listen to in the quiet comfort of home with $200 noise canceling hadphones. To get superior quality, even Apple reccomends the purchase of superior headphones, typically not less than $100 for a pair of earbuds.
Over 80% of people simply can not tell the difference betwenn 256bit AAC and lossless audio. about 75% of people can't tell with MP3. (yes, high quality AAC is generally considered supoerior to PM3 quality, though the reverse is true at lower bit rates). http://pcworld.about.com/news/Oct022001id64123.htm.
Using the same headphones on multiple devices, you're telling me that even though 80% of people can't tell the difference between 256bit and uncomressed (and when 33% can't tell the difference between 48kbps and 256), that you can tell the difference between a Zune and an iPod? BULLSHIT! Maybe with scientific grade quality gear and perfect test conditions, but honestly, in a blind test, vs an open test, I bet the numbers would be radically different (with results crealy showing perceived quality is subject to brand discrimination).
What's more likely is you;re an apple hater by default, and some time ago, a friend with a new Ipod, showing it off, pissing you off, offered to play some songs for you, likely tyhat were 128bit at best, and you listened to the in less than ideal consitions on the sub-par headphones they used to ship with iPods (the current model is somewhat better, but still worth replacing, as are the Zune headphones, Sony, and everyone else). You formed an opinion, and are simply convinced, and unwilling to accept your test was unfair to the Apple device, and unwilling to attempt another go at it since you simply are uninterested in elarning your perception is wrong and Apple is just as good.