Thoughtfix has a great comparative review of the Nokia N810 handheld compared and contrasted with the Asus 3e PC ultraportable.
I was an early N800 buyer and have always been impressed and pleased with the device. The introduction of a keyboard on the N810 as well as GPS and some other improvements make it very compelling.
While the author side with the N810 as his alternate portable (a companion to his phone) he also says he foresees great things for his Asus.
You can read the details here:
PS – I’m writing this from my Zonbu laptop.