I have kept up with NeoOffice for some time, but not regular use. The last two downloads of the OO Beta have been very good. So now I am beginning to convert some of my projects (all writing) to OO (actually copies of the original files, in case something goes wrong). I have been satisfied with it so far. I am also going through the tutorial (as time permits) because a few items I used to use in MS Office are done differently and I don't want to overlook some of the capabilities.
My one concern will be RTL languages (specifically Hebrew). I use Mellel for most of my Hebrew work, but hope OO works too. I don't think NeoOffice handles it correctly.