Handheld Device That Can Browse Internet What Is The Best Handheld Device For Me?

What is the best handheld device for me? - handheld device that can browse internet

That's what I want it not:
MP3 Players
Possibility for internet access (log in automatically connected at all times [eg, Starbucks, an Internet café, etc.])
Video Player
Applications
Search files (such as a Pocket PC) - not mandatory, but I would like.

I use a lot of emails to send them from work while I'm gone. Is there a portable device that can all or most of these things?
Thank you!