I have the following MBP: 15-inch, Mid 2010 Processor 2.66 GHz Intel Core i7 Memory 8 GB 1067 MHz DDR3 Graphics NVIDIA GeForce GT 330M 512 MB 500 GB SATA Disk I do a lot of Photoshop, Illustrator and Premiere. 1. Would I notice a subtle or significant speed increase by upgrading to a new MBP? 2. Besides Thunderbolt, USB3.0 and a Retina display, is there anything else about the newer MBP that I should consider upgrading for? Thanks.