I am in the same situation. And just two days ago i had the oportunity to try in the shop the N9.

Unlike you, i'm not gonna buy a new phone in 6 months but in 2 years probably, so i have to do a smart movement.

I would prefer a higher-than 3.9 inches screen, but i know what to expect from the n900 so i would go directly for the n9. The OS is imprressive.

But, that phone is already dead, and i don't like the idea of repeating the mistake of the n900.

So i'm waiting to see android 4 and what does he offers. Nexus primer is my num 1 candidate.

However, i think that when i buy the new mobile, we will have some nokia w7 phones, and perhaps nokia will say someting about future updates of meltemi in the n9, which would make me think again about it.

Right now, the only option that i see in the new android.