I got the low end 15", with the HD 6490M. Now I'm having worries that it's not future-proof enough. Should I return the current one for the high-end HD 6750M? Also, I could care less about the CPU bump (Miniscule) and the HDD bump (I have my own HDD). All I want to know is, should I have gotten the high-end GPU instead of the low-end? Is a GPU bump for $400 worth it? I do some light gaming, like Portal 2 and Halo 2 and stuff. Nothing heavy like Starcraft 2. I however, do Photoshop work and occasional casual video editing via iMovie.