I also went from an N97 to the N900,

I swore blind that the N97 was the best phone ever made until I experienced the N900. There is nothing that the N97 did for me that the N900 doesnt, All the software I brought for the N97 the N900 does for free. such as telexy's brilliant networking tools for s60 can be done with the SAMBA stuff.

The fact that I can do true cross platform encryption using truecrypt was a huge bonus aswell.

I passed my N97 on to a friend and he is loving it but every time he asks me how something works I hate touching it now . it is a great phone but nowhere near the abilities of the N900.

I agree it is missing some Office software but I just use google docs thanks to the browser, its perfect for my needs.