Ok so I currently have the mid-2012 15" Retina MBP, one of the first models with the Retina display. I also have an older 13" Air that I was using primarily for school. I really do not need two laptops so I'm looking to sell them both and pick up one machine that will meet all of my needs. I primarily use my laptops for basic school use including web browsing, word processing, and other basic applications. I also have a big music and movie collection but it's all stored on external hard drives so I'd need to access/manage these files. I do not game at all on my laptops but I've been getting into photography so I'd like the ability to edit photos taken on my DSLR. I probably won't do any video editing but I'd like the option to do some beginner stuff on iMovie. The last thing I use my rMBP for is music recording/production, primarily with Logic Pro. According to Apple, the programs I'm looking to run require a minimum of 4gb of ram but I'm just worried about the dual-core i5. I've currently been carrying the 13" Air to school because the 15" rMBP is just too bulky. I really like the 13" size but the fact there's no quad-core i7 option kind of scares me. My old 2012 15"rMBP has a 2.3 i7 quad-core, 8gb ram, 256gb ssd, and a GeForce 650M/Intel HD 4000. Will the 2015 13" rMBP meet my needs? I really like the look and feel of it but I'm just concerned that the dual-core i5 might be sluggish when running multiple apps. Could anyone share their experience or feedback??