hi fellow metal-head cyberboy109!

1. Is the sound quality good enough to replace your ipod?

I'd say yes, but part of that answer is because I find the ipod to have a horrific sound quality. I own a Zen Touch, from 2004, built by Creative. And although the sound is much better on my Creative, combining the N900 with my Sennheiser HD202, the result is reasonable enough to get through the daily travels. Don't expect too much of the N900 headphones that come with the machine, though... And if I really want to listen to music with a good sound quality, at night on the roof-terrace, laying on my back with a joint, yes, I do switch back to my Zen Touch

2. How's the webbrowser?

Although it can at times be a bit slow, I find browserd, the standard browser to be impressive. Things just work and they do it well.

3. The slider quality, how is it?

Good. Never had a problem with it.

4. Responsiveness of the screen, you ask?

I don't know the other devices you've owned but have had a go with Iphones and Ipods from friends. Compared to those I have always been happy with my touch screen.

5. Document editing?

Leafpad is a sweet lightweight text editor that carries nothing fancy like spelling and such, but works well. Personally I never use spell checks anyway. I don't think it will support any Microsoft products though. Expect txt and rtf at max.

6. The N900 can be hooked up with a bluetooth mouse and keyboard, if that's what you're looking for. Personally I simply forward my X with SSH to my laptop to avoid typing on the small keyboard of the N900. But when I am on the road, I am happy every single time I use that keyboard, just because I have all this connectivity in my pocket.