Whilst I agree with much of this, there is an issue with the point about the 3 iPhones that Apple are selling currently: as a result of the 3GS running the same version of iOS as the iPhone 4, it performs sluggishly and is nowhere near as slick. However, the Android devices from the same year still run flawlessly because they haven't been upgraded. I'm not saying that you should never upgrade customer's phones after they've bought them but there is definitely two sides to the story.