I just bought a 13" Retina Macbook Pro from Best Buy for $1299 (from $1499) and since I am a Silver Plus member I have 45 days to return. Knowing Apple's history, it is hard to find a computer in stock right away after launch. I just want to know, by the rumors and such... Will Haswell be a big difference in speed or it pretty much only targets battery life and a small speed bump? I researched online, but some forums are saying Apple is having a top of the line Haswell chip that will make a big difference in speed. Some are saying that, the only big benefit is the battery life.... I'm torn. Please advise. Thanks.