1) in general all modern active glasses are somewhat equivalent, I think the deciding factor is mainly the display itself and the driver compatibility. For now 3D Vision seems to be the more mature driver, so your best bet would probably be to choose a 3D Vision compatible display.
The new LightBoost technology (3D Vision 2) from NVIDIA should also offer a greater brightness with supported displays, which seems to be a clear advantage for 3D Vision again. For the Asus VG278H it has been measured at 52cd/m² through the glasses, when the Samsung 2233rz offers only 16cd/m². That's a x3 enhancement...
The measurements are in this test (in French) :
http://www.01net.com/fiche-produit/pris ... us-vg278h/" onclick="window.open(this.href);return false;
2) most of the time glasses for display manufacturers are only compatible with their own displays. Previously Samsung glasses for their TVs were also compatible with Mitsubishi TVs but I don't think it's longer the case. Some efforts are currently beeing done to create compatible standards, but that's a quite recent approach with not much results for now. And I think it essentialy concerns TVs, not monitors. As with 1) your best bet would be to stick with 3D Vision glasses.
3) most 3D monitors are 3D Vision compatible, there is only a handful which is only compatible with HD3D. You can find the list of 3D Vision supported monitors here :
http://www.nvidia.com/object/3d-vision- ... ments.html" onclick="window.open(this.href);return false;
The same list for HD3D :
http://www.amd.com/us/products/technolo ... dware.aspx" onclick="window.open(this.href);return false;
4) You can have a look at DigitalVersus or the 3D Vision Blog which often give detailled reviews about 3D monitors. You can also find reviews on this site sometimes. When I want to buy something I generally try to read ALL the reviews I can find on the 2-3 best products in the category. Google is your friend in this case...
![Razz :P](./images/smilies/icon_razz.gif)