Glossy vs. matte is a minor issue compared to the ever-widening aspect ratios. Except for watching movies, the usefulness of a screen is determined by its vertical size. The 4:3 aspect ratio is by far the most useful. 16:10 is dramatically worse. 16:9 is an evil plot to prevent computer users from doing their jobs. Yet, the LCD industry is increasingly cranking out displays that are wider and shorter. The pinnacle of laptop displays was the Thinkpad T60's FlexView (aka IPS) 1600x1200 display. It's all been downhill since then.
Interestingly, though, Apple seems to have figured this out. The 4:3 aspect ratio IPS display on the iPad is gorgeous -- and the right aspect ratio. The iPad display is a classic example of what makes Apple successful -- they push component manufacturers to produce what consumers desire, as opposed to assembling the cheapest components into an cheap, inelegant commodity product.