Hi guys I have just ordered a MacBook Pro today and I am going to use it solely for music composition using logic. After a lot of research I decided to go for the non retina macbook because its upgradable where as the retina models hard drive and ram are soldered to the mother board. Here is the spec... 2.6GHz Quad-core Intel Core i7, Turbo Boost up to 3.6GHz 8GB 1600MHz DDR3 SDRAM - 2x4GB 750GB Serial ATA Drive @ 7200 rpm SuperDrive 8x (DVD±R DL/DVD±RW/CD-RW) MacBook Pro 15-inch Hi-Res Glossy Widescreen Display For an extra £323 ($510) could have purchased the retina with a 512 gb SSD and 8Gb ram. Do you think I made the right decision to go with the non-retina model? If I wanted to cancel and reorder its not too late.