Here are my experiences with the XL2410T. I am a long owner of a BenQ monitor, G2400W to be precise, and I loved everything about it: the accurate colour reproduction, the good shadow detail for a TN panel.
1. The quality control in BenQ seems to be lacking, to say the least. The inter-unit variability in some BenQ product lines, especially the XL2410T, is staggering. So be warned. You may end up with one of the good examples, or you may not. I didn't.
2. First thing I noticed is how badly the shadow detail is crushed. For example, in standard mode, with brightness/contrast at about 50 you will be hard pressed to detect level15 in the online Lagom LCD black levels test (http://www.lagom.nl/lcd-test/black.php
). Just for comparison, I can see level2 with my old BenQ. FPS mode is not better. User game 1&2 modes seem to have better shadow detail, but the RGB colour and sharpness controls are locked. Moreover, there is a nasty feature on the monitor: in FPS and User game modes there is a slight halo or a shadow around text and smaller icons, which makes it very very uncomfortable to read. You will get a headache in those modes after about half an hour. They are NOT suitable for everyday use. I do not know what causes this, and contrary to some people suggestions it is not the AMA setting: turning it on or off has no effect.
You can try Photo mode, which for some reason has better then average shadow detail on the XL2410T. However, the colours are very very cold in those settings and the blue tones are screamingly inaccurate. In the Lagom black tests you can see about level 9-10.
Right now I've found a temporary solution: set the mode to standard, gamma to 1.8 instead of the normal 2.2 and turn the colours down in the RGB settings and the contrast up. This seems to give the same shadow detail as the Photo setting but with more accurate colour reproduction (thanks to someone on Hardforum for this tip, if I remember correctly).
The standard mode with 2.2 gamma is as bad as this: level15 on the Lagom black tests, and the worst result I've seen on the Lagom white saturation tests (no patterns except for the first one can be distinguished). This is not a joke, folks.
Currently at 1.8 gamma and custom RGB settings I can see level10 blacks and two first rows in the white saturation tests. I'd personally expect a bit more from a monitor that cost 400 EUR.
3. The vertical viewing angles are very, very poor. I have yet to remember a non-entry level LCD monitor with as poor viewing angles as this. Just moving your head up and down an inch will cause the colours to shift. I never noticed anything like this on my old BenQ, and that was not as expensive as the XL2410T.
4. The brightness uniformity is also very poor, which for some reason becomes apparent with greyish/brownish tones more than others. I have no explanation for this.
5. The overdirve trailing is visible and I personally found it slightly annoying. I have kept it on for now since it seems to keep the blurring to a minimum in fast FPS games.
6. Backlight bleed. I never noticed any backlight bleed with my G2400W, and oh boy, do you get some with the XL2410T. It is not noticable on the desktop, but playing dark games and watching movies with dark scenes: hell yes. And what I've seen from the pictures, mine is far from the worst that you can actually get. I bet there are people who would return this monitor for the excessive backlight bleed alone.
7. Lagom gradient tests are far for smooth as well, but that's probably not even worth mentioning at this stage.
In conclusion: apart from the 120hz refresh rate, the XL2410T is worse in every regard when compared to my 2.5 year old G2400W. I have asked the local distributor to contact BenQ about the faults with my monitor and if they ever decide to answer my questions, I will post the info here as well.
Some points: I'm using a better than average video card (Radeon 5870) with all the colour/gamma settings at default and the newest drivers. I'm using the supplied dual-link DVI cable at 120hz mode.
Positives? It has height-adjustment, matte case and screen, and the 120hz is simply fantastic for FPS gaming. Everything else is bollocks I'm afraid.