Im trying to decide which way to go. I was gonna buy the 4 today but I saw it was 100$ more expensive than the 3, which basically has the most important thing to me: the HD screen. The 4 not only has the A6, it also has guaranteed to get iOS 7 and 8, while the 3 will only get iOS 7, and iOS 6 hasnt brought anything great to me. Still, I dont plan of buying another Ipad in the future after this one, since I will use it mainly for web browsing and reading PDFs. Thats why the HD screen is the most important thing, but I wouldnt mind having the extra power and speed of the A6, although in some videos it appears its not that big of a difference (but maybe in the future it will). Would you buy now the 3 for 100$ less or the 4 to have a better product in the long run? Consider this the last Ipad you will buy in 5 or more years. Im coming from Ipad 1.