I am not sure if commercial software can be taken into consideration here
but if it the answer is yes:
I can recommend you "Paragon NTFS for Mac OS X" application
Fast, reliable and very efficient - tested personally with "no glitches" on OS X Leopard, Snow Leopard and Lion;
I suppose on Mountain Lion it should work as well.
Easy to install, can be disabled at any time from a control panel, worked for me with any NTFS-based Windows system from XP, Vista, 7 to the latest 8.
However, Fuse4X + a bit obsolete ntfs-3g is absolutely OK for ...
more tech-savvy users, as many of them are here :-) fortunately