got the viewsonic 120hz screen last week, fantastic for gaming SO much better than normal screens that i couldn't go back now (and i came from a 24 inch screen) its just so much smoother in general and it completely eliminates screen tearing without the need to use the input lag riddled vsync. tested this on many many games that had horrific tearing before far cry 2 dx10 bench, gta4, stalker pripyat bench, crysis etc
got the glasses 1 day ago, had a little trouble with setup, the 3d drivers come with the standard geforce drivers but it seems to need nvidia usb drivers for the ir emitter which i didn't realize but you can easily download the cd from nvidia and just extract those if needed here's link to the latest one -
http://www.nvidia.co.uk/object/geforce_3D_vision_winvista_win7_CD_1.16_uk.html
tried a few games now, heres what i've found with them -
avatar demo - this is really the poster child for this setup, it looks ridiculously good. when it starts with the helicopter section my jaw hit the floor at the 3d effect of the heli. then you land and the on foot section is arguably even better looking in 3d, imo in 3d this blows crysis away its that good
resident evil 5 - the towns feels so much more alive and creepy especially the crows, some really nice camera work on the cut scenes too, will be replaying this for definite in 3d
isometric games - so practically any rts or diablo clone, take torchlight for example, it has no nvidia rating but looks really good in 3d and only the mouse pointer looks a little weird or on the wrong plane or whatever
iracing, GTR2, rfactor - the cockpits look superb, it looks like you can reach out and touch the dash in the jetta tdi in iracing, makes it easier to judge corners aswell with the added depth perception
half life 2 ep2 - heres where things have a couple of little issues, it immediately pops up a message saying you should disable hdr lighting and you need to disable the crosshair too really and enable the nvidia one or again its on the wrong plane. other than that though it works really well indeed, its hard to describe the 3d in words but believe me it adds a LOT and i will be replaying this also
i'm only using a gtx 260 and i've not really had any performance issues as such, just turn the aa down to 2xaa or even off, all the above games were perfectly playable to me on max or near max settings. would i recommend it? absolutely, its fantastic imo and i will be using it LOT in the future, if you can demo it somewhere definitely try it and see if they have avatar demo, if you're not impressed by that then it probably isn't for you, although i'm not sure how you couldn't be