I was just looking through some sales material ...
XGA = 1024 x 768
WXGA = 1280 x 800
SXGA+ = 1400 x 1050
WXGA+ = 1440 x 900
WSXGA+ = 1680 x 1050
WUXGA = 1920 x 1200
Currently I am working with a SXGA+ Laptop - this is so great when you want to have a look at a double-sided PDF or to compare two PDFs next to each other at a reasonable size.
If it isn't for battery runtime, I'd definitively choose at least WXGA for the next laptop...