It's a very tough question. Because you have only one shot to upgrade to 16 gigs. I don't think I plan to do much with my Retina Macbook Pro except use lightroom and aperture to edit my RAW photos. And play some games. I have computers now that have 4GB and 8GB. They seem to be enough. I don't open alot of tabs. I dont' know how people can do that. I'm OCD and have to close my tabs when I'm done reading them. But I'm worried that as retina becomes the future, more internet sites will take advantage and thus everything we do will require more ram.