TN panels are fine for anyone who isn't trying to do professional photography/color correction/ etc. If you have the extra few hundred dollars it would take to get a decent IPS panel then you should, because they do offer superior colors and viewing angles with a still decent response time.
However if you're like me and would rather spend 150$ instead of 350$, and just want to play games, watch some movies, and the like, a TN panel is a perfectly fine investment.