*sigh*
There are real differences between the iPod Classic with its
lock switch and its
physical, tactile click wheel that make it
superior to an iPod Touch in many scenarios. These are why, though I have an iPhone 4 and really think it's a gorgeous, wonderful device, I do
not use it in several situations where, frankly, it sucks.
For one thing, I often use my iPod Classic to listen/glance at news video podcasts and new tv shows I record daily while I am doing chores around the house (laundry, etc.). Due to the nature of the content, I don't need/want to constantly look at the screen, but occasionally will glance at it.
With the Classic, I can engage the
lock switch and put it in my pocket or throw it on top of the heap of clothes in the laundry basket without worrying that when I pick it up to check out something on the screen that I will accidentally touch the home button or anything on the screen and end up interrupting playback. THERE IS NO SOLUTION TO THIS on an iPod Touch or iPhone -- you simply
cannot "lock" the screen/device to ignore accidental touches while
DISPLAYING VIDEO. A friend of mine told of me some hacked up workaround when using wired headphones, but again, since I am using wireless bluetooth headphones in this scenario, that workaround doesn't work, either. Incidentally, that hack merely plays the audio but doesn't display the video, either, so no glancing down to check out video in any case. Yes, I know the Classic doesn't have Bluetooth built-in, but there are a number of bluetooth adapters that plug into the 30-pin connector; I happen to use a Sony one that works quite well for me.
And yes, I know for playing AUDIO, the iPhone/iPod Touch interface works fine for this scenario, as you can lock the screen, but of course, this also turns off the display... which isn't nice when you might wanna see the video playing once in a while.
Also, when I am in the car, I find the tactile interface of the click wheel is much safer to navigate than the touch interface of an iPod Touch or iPhone which are ANNOYING to use because I can, again, accidentally click the home button and end up in another app altogether, which is irritating. The Classic doesn't have this problem. Also, navigating to a particular selection one-handed is a serious challenge with an iPod Touch or iPhone that requires more interaction when driving. I can easily do this with the Classic.