SONY PRS-505/SC Reader Digital Book - Silver
I travel a lot by plane.  There aren't as many bells and whistles as Kindle.  It is smaller and easier to slip into a vest pocket when going from gate to gate or going through security.  The cover protects the screen when it's in a pocket or bag.  All the buttons are easily operated.  Battery life is good.  There is a good selection of books on Sony's book store.  All in all, it's been exactly what I wanted.