I have the Kindle.
I love the built in dictionary, just a touch of a button and I can look up a word.
I love the adjustable font.
I love the ability to download a book anywhere I am, using the whispernet feature. Check the availability map on the Kindles home page to see if you would be able to use it.
I love being able to download the mobile catalogs from here, Mobileread, and Feedbooks.com, and download from there anywhere I am.
You will hear complaints about how the buttons are n the wrong places, no backlight, etc. These are all non-issues for me. I can hold it comfortably, read in any position, and the e-ink screen is like reading a paper book. No eye strain!.
what don't I like about it? There isn't anything I don't like about it. Truly. But thats just me. Amazon has a free 30 day refund policy, so if you did order it and didn't like it, you aren't stuck with it.
Good luck with whichever you choose.