I’ve been having problems with my Mac’s external drive. While Tuxera NTFS-3G is great for casual access to external NTFS drives, I cannot under any circumstances recommend using the NTFS-3G filesystem for your primary external drive. It is EXTREMELY unforgiving: one small error (e.g., accidentally disconnecting drive, power failure, etc.) can render the entire drive unwritable (at least it’s recoverable, except whatever files were being written.)
Furthermore, as I’ve said a million times, the Mac OS Finder sucks. If it hits a file that was corrupted by such an event, it simply stops — good luck figuring out where to pick back up. PathFinder at least offers you the opportunity to skip the offending file and continue with your copy.