I'm also one of those users, who used N95 8Gb for few years before now migrating to N900. N95 was with full potential and N95 8GB was finally the device, which worked properly and had great form factor, great camera and rocked the world untill iPhone started to make waves.

Disappointment for me with N95 8Gb was that Nokia dumped it quite fast and it wasn't interesting and powerfull as a platform for third party developers -- making it useless in terms of platform virality and gaining new usages via downloading new interesting software. Even though the phone was not that old, I felt that I was already second or third class citizen for Nokia as the world had moved on, where as original iPhone users could still get software updates and new software for their device from Apple.

For me N958Gb was a solid device, but rather stupid as a smart phone. Battery life was also poor if you really started to use the device a lot, taking photos with flash etc - which is understandable.

Now I am having high hopes for n900, because it already is at this early stage really good device and software available for it allows me to do much more than on many other devices. I'm keen to see what happens of Android platform and might buy a cheap Android device for testing device, but at the moment it looks like N900 is the best mobile device you can get... if you are a geek socialite like I am :-D