That's an interesting question. I've been researching and you have lots of options. First off, for me the best one would be one integrated with my phone, my ipod and my PDA, ideally the iphone. I've tried that, but the screen is a bit too small and it suffers from the computer screen effect. So I'm researching digital ink products. Here's what I've found The Kindle is probably the best bet for the technical neophyte. Basically, it's the wanna-be ipod of e-books, it's integrated with Amazon and it's pretty easy to use. Comparatively it's pretty cheap. More info at http://wiki.mobileread.com

Ebookwise. I love mine. It cost me about $100. You can probably get it cheaper. You can read books from anywhere. I like to read a lot of free books.

What about Kindle?