I'm looking to spend around $1800ish for a new MacbookPro. (I will be able to get an educational discount and purchase in a sales tax-free state.) The model that I'm most strongly considering is the brand new 13" Macbook Retina with 2.4Ghz/16MB RAM and Applecare. This puts me at $1762. However, I looked at refurbished models and the Apple store is selling the following refurbished 15" Macbook from February 2013 for $2068 including AppleCare: 16GB of 1600MHz DDR3L SDRAM 256GB Flash Storage 720p FaceTime HD Camera NVIDIA GeForce GT 650M with 1GB of GDDR5 memory Can someone explain to me what the speed differences will be between the two in various situations? In particular, I'm interested in how the differences might effect performance in say Logic Pro, Sibelius 7 and Max/MSP. I really don't want to have to spend the extra money to get the new 15" MacbookPro, as I feel it is beyond my price range. Thanks.