So is there still not a common format for exchanging a hard drive between mac and pc systems while not over a network? I'm hearing on some sites that NTFS is still my best bet using a third party mac application? Will this change my disc access speeds if I'm using files from the drive over my mac in active realtime audio/video applications? Any and all advice for formatting an external usb hard drive to be used between mac and pc is much appreciated. I don't plan on needing boot capabilities from this particular drive.