It all depends how Nokia approach the OS.

With PR1.2 maemo became a stable OS, a well understood system and could have been a stable OS for other Nokia products.

Instead Nokia are going to abandon it and start the whole process again with MeeGo. All the time, effort and money spent on maemo have been wasted!

I love Nokia products hardware-wise but I am a little dubious about long-term support (software-wise).

From a hardware point of view I would buy Nokia again but software-wise and support not a chance.

I will have the n900 (very happy with it) for the next 2 or 3 years and will wait and see how Nokia perform.