Demon wrote this before about the Sammy and Hitachi....
"I don't think my sammy 172T has a bad panel, these seem to be limited to the 181's and gave mutliple image ghosting problems, giving you for example the same effect as mouse trials.. , multiple images of the mouse pointer....
My samsung gives smearing of the mouse pointer, which seems in line with the 25/40mS LCD's that I have seen (an Eizo L565 for instance). When reviewed, they seem to perform equal to or slightly worse than most 40mS LCD's, and that is where I would place mine. The worse thing with the samsung panels is the black smearing, a trait of poor rise times, and this is the most noticeable smearing... the real ghosting is very minimal.
In fact games like UT2K3 are very playable with the Samsung, but when running around, the ground looks out of focus, and this is due to the response times. I only noticed this because the Hitachi is so much better in this respect, and gives a much crisper in focus effect.
I'd say the Hitachi is at least 2-3 time faster then the Samsung panels, they claim 25ms theoretically, but the 'typical' times are around 40mS, the Hitachi 16mS is quoted as typcical already, so its theoretical will be faster then this, and it shows in side by side tests. Its black smearing that plagues the samsung is non existant on the Hitachi.
Even at 16mS if you know what to look for, it still smears, but ghosting is dramatically reduced.
The Hitachi technically does lack slightly in yellows/Cyans, and is dominant in red/blue, and has a high DVI contrast, which makes games look superb, but can make some yellow icons look slightly off. This is minor, and can be adjusted out of course..
The samsungs have low DVI contrast, and do look a bit washed out, but give more dark detail.
As for the size, I'm sure people notice the extra inch of the 181, but it is still 1280*1024, and the text size is quite large on the 17, so on the 18 will be even bigger. What I'm saying is the extra inch is not that big a deal, if it gave you 1600 * 1200, then yes, I'd get one myself.... (A 16mS One that is), and larger panels show things like smearing/ghosting up even more..
If games are your thing, the Hitachi is without doubt the one to buy, if you only use 2D apps, then any LCD will do, so the 181T is fine...
You really want to try the monitors for yourself, as only you will know what's acceptable to you. I'd make sure you demo them, since £600 on a 181 is a lot of money to risk.. even the £430 of the Hitachi still warrants a demo..."
http://forums.overclockers.co.uk/showthread.php?s=&postid=182195
And also more reviewage from Demon here:
http://www.phil-t.demon.co.uk/review/hitachi_review.htm
Conclusion is: the Hitachi basicaly Ownz