I switched from WinMob 6.1 to an iPhone too. I'll never go back. I will never buy another phone that has to be operated with a toothpick.
I read books very often with Stanza. It's great. I just bought a book for it this weekend. "A History of the American People". For reading my Game FAQs and walkthroughs, I use GoodReader. It formats nicely so that a standard ASCII document can be read in landscape view without word wrapping which screws up the ASCII tables and makes them hard to use.
The Droid looks to be a very nice phone too. I watched demos of it on the internet. It looks very iPhone like which is a good thing. I could see myself buying one of those in the future if android turns out to be as slick as the iPhone OS. I would like to be able to develop apps for my phone without special permission from Apple and without buying a damned Mac computer.