BenQ E2200HD is priced more only for flashier looks, useless speaker and usb hub (if i'm not mistaken). G2220 HD is amazing. I've seen it in operation and it's great. save 3k or invest 1 more and go for 24" benQ 2411HD.
But the dell model above is also pretty good. decent reviews it has got.. but benQ comes with dvi cable
my vote goes for dell, dvi cable can be purchased for cheap, so the criteria should be the monitor's quality and features along with budget (the most important part of any deal)..
but B2230 specification is really good. The typical brightness of samsung is 300cd/m square, where as in dell its 250/m square. Could some one really provide input interms of the real difference in samsung vs Dell????????