First, 2048x1152 doesn't offer significantly more pixels than 1920x1200. It's basically 236k-pixels versus 230k-pixels. So, for me this is not the crucial must-buy spec.
For desktop work an advantage would be that you'll be able to put two Word documents next to each other, that could facilitate things a little.
But the 2048x1152 format also comes with some issues in terms of Full HD content. As full hd content is 1920x1080 a monitor with this resolution is a perfect fit, whereas for the larger format in order to fill the screen completely, the image would need to be scaled up in resolution which could result in reduced image quality.
So, personally I'd stick with 22" or 24" 1920x1080. Samsung and other manufacturers has good one's, BenQ has great LCD monitors, too. I, for example, use the E2200HD from Benq.