I was going to open a new topic but this one seems to be the place to ask my questions.

I own and use a N800 since about 3 years now, and I use it every single day, and enjoy it. But I hate to write on the screen of N800. It just sucks,

I have used my N800 mostly for private and business occasions. Now I am thinking of getting a mobile computer for business purposes, but my main needs must be satisfied to an extent by the phone. Price is not the main issue.

I need the following applications for business:

dedicated ftp application,
video player
power point presentation wiever
qwerty keyboard
excell viewer
pdf viewer
if possible outlook syncronisation of emails, possibility to connect to MS exchange server
if possible push email
if possible an application to view 3D data, something like "transmagic" that runs on MS machines.
**satnav

**I am using maemo mapper on my N800 since long time with great satisfaction. Due to my work, I need to visit unknown cities and also go to very remote parts of the land, away from towns. I use google maps, sat images, VE street or sat, Yahoo street or whatever I can find to illuminate my target area in maemo mapper. I have covered so far thousands of kilometers and the application runs very stable for me using an external sat receiver, coupled with bluetooth. If N900 can not do that much, I can still keep my N800 for satnav as long as N900 can support N800 for internet access over 3G network on one side and BT on the N900-N800 side.

My new device must be below 500 grams and must be able to fit to my pocket or at least to my not so large purse. By the way, I carry a business notebook in my car for desktop computing needs but I also need a phone-computer that can release me to carry the notebook to fairs, factory visits, customer presentations and such occasions. Actually, my N800 was able to do much of that so far, the only missing parts for me were typing problems and wifi but no 3G to access the internet.

So considering all my needs, which ones are possible which ones are not with n900 please?

It is interesting to admit that, instead of getting a new N900, I could buy an USB or BT type tiny keyboard, and a cheap mobile phone that is 3G and BT DUN capable to tether to my N800 and then I would probably use N800 another 3-5 years.