I visited an apple store today. The retina display is simply beautiful. The workspace is suitable, however i can see it being a bit small. In 1440x900, the screen was super sharp. You simply have to see it for yourself. I even put it in 1920x1200 mode and it was still beautiful, but things might be a little bit too small for some. It looked better than any other MacBook pro. Also, the glare wasn't as bad as on other pros.
In any mode, the display was amazing.