I'm going back and forth with the new iMac 21.5in 16GB ram for 1450, or the MacBook Air 13" 1400 8GB ram once they announce a new one in summer 2013. I take a tons of photos, I do a lot editing, I need a lot of space, which Mac should I buy and what specs should I get? Ill do my homework on it including iWork, Lightroom, photoshop, Final Cut Pro, photo editing, YouTube videos etc, which Mac would fit my best bet? Please help, I also want it to past 5+ years.