The N900 is still available at amazon as well. I bought a second one recently when I thought my first one was bricked after someone spilled coffee all over it, but after taking it apart and wrapping it paper towels (had no rice in the cupboard) over night it worked just fine the next morning. Now I have a spare to develop on and hack to my hearts content B-)

More on the thread's topic, I did consider switching to an android phone instead but all even anywhere close to having all the features of the N900 were hundreds of dollars more than it's current price. Apple's phones are totally off the table for me as openness is my number one concern.