I have the a MacBook Pro (13-inch, Mid 2009) model with the following specs: 2.26 GHz Intel Core 2 Duo 8 GB 1067 MHz DDR3 NVIDIA GeForce 9400M 256 MB Samsung 500GB SSD (Upgraded in 2013) I use my MacBook Pro hooked up to my 23" Dell monitor a lot, I've considered buying an iMac but I need the portability. When I am using my MacBook Pro it stutters a bit when trying to play 480p video from YouTube, or when using some programs like Adobe Illustrator. It's very minimal but can be a bit annoying. I imagine it's struggling a bit with the extra task of using the monitor. I also game on it from time to time, I used to run Starcraft 2 at low settings and the fans would kick in heavy but it ran okay (frame rate got bad in big battles). My question is whether it would be worth upgrading to the recent MacBook Pro model? There is a bonus of having the retina screen, but would I find any significant performance upgrade for the money? Thanks!