Sorry to be dim but why is VA important?
In simple terms, I'd say that TN panels are office-grade: they are suitable for working with text editors, some Internet surfing - the simple graphic stuff, that does not contain too much of a picture information.
And IPS/*VA panels are TV/video-grade: they offer significantly better performance while viewing photos and videos with rich picture information.
I suppose, using IPS/*VA display at home is always a better idea. I have Sony LCD monitor with MVA panel, and when I see any particular photo on it after any TN display, it looks fresh new to me - there's so much additional colour information, shades and nuances that were absent even on well setup TN.