Hi, I'm looking at getting a new 15 inch rmbp in the next few weeks, but am struggling to decide which model to get. Apart from battery life, is there likely to be any other main advantages with the haswell model? I need a machine with 500 gig storage, so my choices are either get the lower end haswell, and upgrade the HD, which will be around 1700GBP before upgrading the hard drive.alternatively, there are a couple of places already selling the higher end 2012 model for 1650GBP, which already has 512gig hard drive, as well as 16gig of ram. What's the best option? I'm not sure battery life is a huge deal for me.