@ refillable
16:10 is not 'wider' than 16:9, it is in fact taller.
@OP
I have a 1920x1200 screen and love the resolution, for movie watching it is a great compromise between 4:3 and 16:9, and when watching wide screen movies the player interface generally stays out of the screen when you move the mouse. For most games it is similar in that there is more top and bottom space for interface, and then the game play area is larger (but it does depend on the game). 1080p is not bad, and has advantages if you ever want to hook up a console or blue ray player to it, but if this is for PC gaming only then go with 16:10 ratio.
More important than resolution is the display technology. TN tech has come a long way over the years but IPS (or one of it's variants) is still the way to go if you can afford it. It will give more even coloring, deeper blacks, whiter whites, and it is color correctable.
having a 27" screen myself I can tell you than a large TN screen will look slightly warmer on the left side, and cooler on the right side. There is no way to correct for this, and while not the end of the world, and not really noticeable for games and movies, it becomes a major annoyance when trying to do photoshop or other 'color critical' work. The smaller the screen the less of an issue this will be.