Hi, I am a Mac virgin with a 5yr old Dell XPS which has pretty much been upgraded as much as possible in an attempt to keep it current. I am now contemplating a switch to Apple with either the 13" or more likely 15" rMBP. As a Mac novice, how much benefit am I going to get for the 16GB memory upgrade over the 8GB? I generally put my laptop through light internet useage, various media consumption and some specialised software which I will need to run on OSX wtih VMWare or similar. I would like to occasionally blast through some Diablo 3 (my old M1210 with Intel 945GM struggles with Diablo 2 so this will certainly be a step up). I don't really get much into photo editing and have never really played with video editing (it would be a painful process on the Dell). So am I going to see any benefit from paying extra for more memory - perhaps to help future-proof somewhat. Many thanks!! Phil.