Reading linear books (novels, etc.), get an e-ink reader like the Kindle, etc. You won't mind the page delay if it's one page at a time.

Reading tech books (manuals, reference material, etc.) get an iPad or subnotebook. Much faster to flip rapidly through as there's a much smaller page load delay, better search etc.

I'm so thankful for ebooks - there's a line in one of the perl docs that says "You can't grep dead trees", which has always been my beef with paper docs.