Having a nice and crisp screen is very important off course, Craig. I agree. But, physical screen size is very important for book reading as well. And no matter how fine or lovely the resolution and colors of a pocket PC or palm are, it doesn't make them bigger.
Still, I agree with Craig about somethings, Sandra. Try and see how several different devices are to your liking if you can. Check many reviews about the Fictionwise 1150 (because it is about the same as the ETI-2 and 1100) and other reviews about other devices.