I have a Macbook Air 11" (2011: 1.6GHz, 128 SSD, 4GB RAM) and an iMac 27" (2010: 2.93GHz i7, 2 TB HDD, 4 GB RAM). Should I consider selling these two to upgrade to something more in the middle of the two? I am a high school photo student for the most part and sometimes work with high res video. Other than that my computer usage is pretty casual and I have no need for a CD Drive. Is it worth selling both of these computers for the retina Macbook Pro? Should I wait until they refresh the retina next year maybe? Any thoughts or advice would be nice seeing how a MBP Retina isn't cheap. Thanks in advance.