Is NTFS-3G safe for writing?

As you can see HERE it is 100% compatible Read/Write NTFS for Windows XP, 2000, 2003, 2008, Vista, 7 and whatever other NTFS windows system comes out or missed.

And I quote:

NTFS-3G is a stable, full-featured, read-write NTFS driver for Linux, Android, Mac OS X, FreeBSD, NetBSD, OpenSolaris, QNX, Haiku, and other operating systems. It provides safe handling of the Windows XP, Windows Server 2003, Windows 2000, Windows Vista, Windows Server 2008 and Windows 7 NTFS file systems

The performance for me (which I tested A LOT of them) is the same as using NTFS on Windows. You will not have any problems with any version of NTFS for any version of Windows.

More info here: http://en.wikipedia.org/wiki/NTFS-3G

I've been using ntfs-3g since I started using Ubuntu when it was 9.04. I havent yet run into any issues with read/writeability using the ntfs-3g driver. You should be fine with using the ntfs-3g drivers.