Yet another "should I buy now or wait" question. I'm in the market for a Mac Pro. I primarily use my computer for digital photography (Photoshop CS3 & Lightroom), a bit of design (InDesign, Illustrator, etc.) and of course the basics. No video work, at least not often (maybe the occasional iMovie project) and no games. Is it worth waiting for the new Mac Pros? Any word on when they're expected? One more kind of unrelated question: would there be a significant difference between 5 and 7 GB of RAM with the applications I use? I'm trying to decide whether to spend the extra $200 I have on another hard drive or 2 more Gigs of RAM. Thanks.