Loved that - and the ability to easily search through tabs, close them. etc.

Could be both. Check out Hack Fortress (at Defcon/Shmoocon every year)

Ironically, I find that it is easier for me to find the specific information I'm looking for in a book than by using my e-book reader. (Irex Iliad).

The current downside for an e-book reader is the extremely slow refresh rate, as it makes it impossible to just "flip" through a book.

That being said, I would not give up my Iliad for anything. I love it, and it was one of the best purchases Ive made.