"the clickwheel could be a bit hard to navigate with accuracy, say, when jogging"

And a touch screen with no tactile feedback at all is going to be easy to navigate? Without stopping to look? I don’t think they thought this through…

— Engadget reviews the new iPod Nano

Question for iOS developers.

If developing for Apple mobile devices do you need multiple devices for testing?

• iPad (iOS 3 & 4 when released)
• iPhone 4 (iOS 4)
• iPhone 3GS (iOS 3 & 4)
• iPhone 3G (iOS 3 & 4)
• iPhone (iOS 3)
• 3rd Gen iPod Touch (iOS 3 & 4)
• 2nd Gen iPod Touch (iOS 3 & 4)
• 1st Gen iPod Touch (iOS 3)

Because it could get really fucking expensive. Or is emulation good enough?