Hi Guys, I currently have a mid 2009 2.26Ghz MacBook Pro, which has been excellent from day one. However, I am looking to upgrade and I'm not sure if I should go for the 13" i5 or spend a little more on the i7. Realistically, I only use the laptop for surfing and Uni work - However, I do use photoshop and Lightroom quite a lot, as I do take and edit a lot of photographs. Would I notice a big difference in the i5 overt current MBP? Or do I just go for the i7? Either way, I would be upgrading the ram to 16GB - Not from apple of course. I have 8GB in mine now. Thanks in advance.