Guys, I seek out your advice. My 15" MBP (Mid 2012, 4x 2,7Ghz i7, 8 Gig RAM) is getting rusty and started to randomly just die down, when I lift it the wrong way. Now I do have the spare money to throw it at a new rMBP 13" with max Stats (i7, 16 Gig, 1TB), but like to spend wisely. My main use of the laptop is: Lightroom editing (with external display, hobby), connecting it to my TV for movies, heavy Excel-spreadsheet (Work) and I travel A LOT with it. In most scenarios where I need screen-real-estate, I have an external monitor available, on the road I assume I will appreciate the compact size/weight more than an 15" screen. What would you do? The Geekbenchperformance of both are almost identical single core and about 50% WORSE (4-core vs. 2-core) for the new 13" in comparison to my old rusty machine. Does that make a real life difference in image editing? I seek your sanity check. Thanks a lot mates!