Well, if all you mentioned were available my order would be Jolla, N9, neo900 and new/repaired n900

I am guessing it all comes down to what you want/need from your phone.

Basic usage? Then I would definetly go woth N9, since its UI far superior to n900 in normal everyday usage.

Doing heavy texting/writing? n900 for sure. Also if you really need to do some extraordinery things.

N9 is not as good for mod/tweaking, but then again, for me there has been nothing really important missing.

If you wan't device that is almoust cutting edge/latest/supported by manufacturer then it is Jolla or to some extend neo900