Only slightly off-topic...
If you are using a flash drive only to transfer files that you care about between two Windows computers, format it with NTFS.
The problem is that the FATs can only record modify times with a precision of two seconds. Ok, most of the time you don't care if the time is off, but it makes it hard to see if a file is the same on two computers. Since the original files on your Windows box are probably already in NTFS it makes the transfer more transparent using NTFS to transfer.
See:
https://stackoverflow.com/questions/...me-resolutions
Copying music to something and you're just going to play it? Use whatever.
Transfering 10 years of business records from an old PC to a new PC? Use NTFS.