x86_64 laptop recommendations?

[John Haxby]

My laptop is due for replacement and I'd like to replace it with an 
x86_64-based one.   Does anyone have anything they recommend or 
recommend avoidng?   My main requirement is that it should have a 
1920x1200 screen: my old Dell laptop has that and I don't want anything 
smaller.   Built-in wireless is also a definite plus, preferably with 
some chipset that is natively supported by Linux.

jch