Hey, I switched from an N96 to an N900 too, so I want to point out what I noticed most.

What I love:
-Web browsing is AMAZING on the n900, n96 was nowhere close, everything was such a hassle, even on opera, compared to the n900.
-Backgrounds/desktop customization, is also awesome. So easy to customize and add buttons and widjets everywhere Also, the loopable, panoramic view desktop is very nice. There are quite a few pleasant panorama images you can use. www.n900wallpapers.com
-Skype!!! And other chat services (I only have facebook chat, ask others for the different types of chat you can integrate with texts and stuff). Skype is built in just like a normal phone call and text, for free (to other skype computers), as the N900 is considered a computer.
-Internet connectivity. It seems so much easier than my n96, probably due to the roots of Maemo and internet tablets before. Whenever I'm at work, school, or home, its always on corresponding wifi. When im in between it switches to 2g or 3g (whatever i feel like doing).
-Resistive touchscreen. Yes, I prefer resistive over capacitive. A big reason is that I can use the styles, but mainly my pencil tip/lead/eraser/stylus. Which leads to: able to click small links without always having to zoom in.

What I miss:
-Dedicated (non-slider) media keys. It was really convenient changing songs and stuff quickly with the stealth/hidden media keys
-App selection. I didn't jam-pack my N96 with apps at all, so this doesn't affect me much, but I think there are MANY more apps for symbian than Maemo 5.
-Google Maps. I think this deserves it's own point. Ovi Maps got A LOT better after the recent 1.2 firmware, but I still miss Google maps which isn't available on Maemo 5, yet?
-Battery life. Fact, the N96s battery lasted longer than my N900. On the other hand though, I do MUCH more with my n900. Also, it's nice I can charge via USB as well as wall socket.

Grey Area:
-Camera, some days I think the n900 camera is better, some days I think the N96 camera is better. I can't decide. Maybe the software side of n900 camera is still catching up to the features offered on the N96 camera. For example the 1.2 firmware that just released for the N900 brought a few more features and settings to the camera. I like that the N900 has a lens cover though, its easier to just open that which will start the camera instead of pressing and holding the camera key on the n96.

Other:
I don't know why people say the N900 is hard to use. I've used Symbian phones forever, and I think Maemo 5 is way more intuitive and pleasing. Although I did love exploring the endless menus in my symbian phones, I would also discover some stupid setting in a new folder :P I think it's very easy to move around on the phone, due to the lack of endless folders, and the ability to put shortcuts for almost ANYTHING on your desktop, just like on a laptop or desktop computer.

I've experimented with the command line 3 times:
apt-get moo
top
apt-get (some file name to complete installation of a "Prismic Wallpaper Manager").
I've never used command line or Linux operating systems or anything like that before, I'm a total noob. I don't feel like I'm missing out, although there are probably some cool things you can do with the command line, like fetch files from your computer at home :P

It really is like a mini computer.

In conclusion, I am very happy I bought the N900 ($530 newegg.com when I bought it), and would do it all over again ($470 http://www.newegg.com/Product/Produc...-178-_-Product )

Phew, that was long. I hope it was helpful. Any N96 vs. N900 questions?