I may soon be in the market for a PDA, after finally landing a decent teaching job. I would be looking for a PDA with the following capabilities:

1. Decent pdf reading i.e. academic papers, e-books, that sort of thing
2. Ability to connect to a data projector
3. In concert with the above, pocket versions of Word, Powerpoint and preferably Excel
4. For all of the above, good storage, screen and battery life.

Are there any units that fit this brief? Don't worry about cash, I'll work out a budget once I've got a few options.