For me I have 2 IPS screens and 1 VA. I am returning the VA because it is straining my eyes more than either IPS. Fortunately Amazon is good about returns. I haven't used a TN in many years, but I'm assuming TN technology is more similar to VA than to IPS.
Based on what I have, the IPS screens work better for my eyes, but the sample size is small. My low haze IPS is the better of the two, but both are better for me than the VA "eye care" model.
I should also mention I go without glasses whenever possible. I've read VA gives one a better surface to "focus on" versus IPS. People who wear glasses all the time tend to have a need to rigidly focus versus using their eyes more easily. They stare and require perfect detail versus taking in visuals more passively.
Since I have myopia but go without glasses most of the time, I am used to less than perfect vision. When I put on contacts or glasses and have clearer vision, I notice a difference in how I am using my eyes, and in my psyche as well.
Aldous Huxley wrote a book called The Art of Seeing about some of these ideas.
Also when I have on my glasses or contacts I am much more easily distracted by the opposite sex whereas without the eye correction I'm better anchored to higher realities.
So those of you preferring TN to IPS, are you heavy glasses wearers with a tendency to rigidly stare at the world?