Wondering if an i5 version with dGPU will make much difference for my usage scenario: 80% of my usage is Office apps (Outlook, Word, Excel, and OneNote mostly). I occasionally use an older version of PhotoShop CS3 for touching up photos and InDesign CS6 for some basic brochures. I do plan to drive two high resolution monitors (2560 x 1440). No games. No video editing. No fancy PhotoShop effects. I will have dual high resolution monitors though (2560 x 1440). Any reason i should spring for the extra graphics power?