I believe the difference between these displays is the number of LED backlights (1 vs 2) and the resolution (1920x1080 vs 1600x900).
The basic 1600x900, one light backlight is still a great monitor.
I also tried researching issues related to EYE STRAIN but it was not that clear. I couldn't find anything that was specific to an IPS vs TN screen. There was response time, brightness, resolution, screen size, ghosting, viewing time but nothing I could find anywhere that could explain IPS being better for the eyes over TN.
Matte (anti-glare) screens are generally best, but the anti-glare coating makes text slightly harder to focus on. On the other hand, glossy screens are almost useless with much sunlight reflecting. So glossy screens are the BEST screens but only if it's very dark like a basement.
You also will need to tweak the brightness, colour pallette and possibly the DPI setting if your eyes are really that sensitive.
Summary:
It's hard to recommend from here. It sounds like you are considering the Sony. I don't see much benefit of the more expensive screens, the 1600x900, single backlight seems quite adequate. I've seen them up close. The dual backlights help prevent showing shadow around the backlight but I didn't really see any on the single LED backlight.
I guess they are slightly better but again I don't know what your budget is.
The higher resolution will require you to raise the DPI by between 10% and 25% or else the web sites and likely other programs will have text which is too small.
Web sites and DPI:
You can also use CTRL + Mouse-Scroll to increase or decrease the text size for Chrome/IE/Firefox. It will remember that page.
You may also wish to use PLUGINS such as:
- NoSquint (Firefox), or
- TurnOfftheLights (Chrome)
Other:
The lights in stores, added to the over-bright and saturated colors of the laptops to compensate can cause eye strain. My research indicates that most laptop screens, properly adjusted will work fine.
Recommended specs:
- Windows 7 64-bit Premium OEM
- quality brand (not ACER)
- 4GB RAM
*quad-core APU's give the best performance to noise ratio. Most Intel CPU's run faster, but their integrated graphics aren't necessarily better than an APU's.
Better graphics can add a lot of heat (needed only for gaming). NVidia's Optimus technology uses two GPU's and turns one off when needed.