IMO, for most people, 8 gigs is probably plenty of RAM for the foreseeable future.
For me, I could survive on it, but 16 will make life less aggravating for me. My current mac has 8, and I HATE closing my current projects worth of apps (Project consisting of an IDE, Photoshop, Aperture, 10 or 12 browser tabs, a word doc or two, SQLDeveloper, a web server console, a few TextWrangler instances). If I close my IDE and re-open a few times, or do a massive dif, everything starts stalling with swap. In order to get back on track, I have to close everything down, restart the computer, and then open it all back up.
16 gigs will be an obvious God Send for me. My wife with her 4 gig air has never used more than 2, never shuts her computer down, and would be insane to pay extra for 16 gigs. She does basic photo stuff with Aperture, browses the web, email, word type stuff for the most part.
As for games, I really don't think any game in the next 5 years will run any better on 16 versus 8. But you never know.
For me, I could survive on it, but 16 will make life less aggravating for me. My current mac has 8, and I HATE closing my current projects worth of apps (Project consisting of an IDE, Photoshop, Aperture, 10 or 12 browser tabs, a word doc or two, SQLDeveloper, a web server console, a few TextWrangler instances). If I close my IDE and re-open a few times, or do a massive dif, everything starts stalling with swap. In order to get back on track, I have to close everything down, restart the computer, and then open it all back up.
16 gigs will be an obvious God Send for me. My wife with her 4 gig air has never used more than 2, never shuts her computer down, and would be insane to pay extra for 16 gigs. She does basic photo stuff with Aperture, browses the web, email, word type stuff for the most part.
As for games, I really don't think any game in the next 5 years will run any better on 16 versus 8. But you never know.