I'm also using my n900 as my one and only phone, but since I enjoy hacking around on it so much (and I need it for work) I have also decided to get a second one (used). It should arrive somewhere this week.

Last night I went to the opening of a local hacklab, saw someone else using a n900 and we started to talk about it. Now before I knew it we were surrounded by other enthousiastic n900 users, it was quite an amazing experience! So the n900 is definately still the phone of choice in that environment from what I saw.