I really like the Thinkpads. My coworkers use the newer T6x series and those are nice. I really like the X series but you lose the DVD player.

Macbooks are nice but you pay the 'tax'. Don't think of it as only a Mac, you can make it a PC by running Boot Camp or Parallels/VMWare/VirtualBox. My wife runs her Macbook w/ XP and it's pretty much a PC.

I have a Dell Mini 9 and love it, but wish the keyboard was bigger. The 10v is rated well.