My n800 has 16GB and 4GB flash cards, and is my device of choice when out and about, I can tether it to my Nokia E65 for data. Because it runs flash, I can use it to check traffic report websites which the iphone can't do. It's a

* good RSS reader,
* audio file and stream player,
* terminal with a super-tiny keyboard,
* adequate mail reader with a separate account used solely for mobile email (only very important people know the address),
* video file player and occasionally useful video stream player

Whilst I do wish it was faster, it's "good enough" for everything I need, and small enough to be genuinely pocketable. The SIP and Skype apps have probably saved me the purchase price of the tablet (US$130) by allowing me to make free or cheap phone calls instead of paying international mobile phone roaming charges!

I shall definitely upgrade to the N900 or an equivalent MID.