I understand they run a different system and Windows run a NTFS storage while Apple runs a Journal storage. What if I do editing for photoshop like pictures on my Apple and then I need to transfer it over to my PC to print it out? I just don't understand what if I need to put a USB into my Mac then transfer it over to my PC if it's not compatible. But somehow it would be compatible if uploaded online through email but would be a hassle to affect my bandwidth. I don't have a Mac but I am planning to grab one but main concern is the compatibility between each other. Can someone tell me how flexible to share the files between each other? Thanks.