Hi, I have a Macbook(laptop #1) I take to work with me and that fills up with photos in different subfolders in a main Photo folder. I would like to automate the following process: 1) Photos in PHOTO folder are automatically copied from laptop #1 to extenal drive when I connect it to external drive. 2) Connecting hard drive to laptop #2(home laptop) automatically syncs PHOTO folder with PHOTO folder in laptop #2 ssd. I have Chronosync, Superduper, Carbon Copy Cloner. Chronosync doesn't do automatic syncing. I was looking at SYNK. I think this might fit the bill but I see it has some issues in the past.