Long time reader, first time poster, will be purchasing my first Mac computer this summer (already have an iPhone and iPad). Thinking about the 15" base model as it should meet all my needs since I don't game on my computer at all (have a PS3). Was just wondering if there was a big difference between the standard resolution on the 15" versus the high res glossy. It's only a $90 upgrade through the education store in Canada, but I don't know if it would be worth anything for me? What are the differences between the two resolutions? Can the higher res cause any problems in comparison to the standard res?