glossy screen is a no no unless u work in a dark place.. reflection on the screen will strain ur eyes like mad cow..

Other brands, im not really sure. You can try LG or Asus, but u will lose the color customization ability of U2312. Not to mention, for the price of rm6xx, its as good as it could get.

However 1 thing I would like to emphasize here is the aftersales warranty service. Trust me, Dell's response and service is the best.