I just recently purchased a rMBP with a 256 GB SSD internal drive (from a 15" MBP with a 500 GB HDD). I am a beginning photographer, but have quickly realized how much space my photos are taking up on my drive. A co-worker of mine has the higher end retina (512 GB storage), but told me he doesn't keep all of his photos on his internal drive, only the project he is currently working on, and keeps all other photos on external drive(s). So, that got me thinking: should I bother exchanging my rMBP (just purchased within the week) for a larger capacity SSD, or should I be keeping the majority of my photos on an external drive? How do you guys/gals store your photos? Internal or external drive? Thanks so much!