Dear fellows:
Just two considerations.
1) I have to disagree with BPiano: you can play anything on a clavinova. The fact that the instrument will not respond perfectly to anything is irrelevant, because no piano but a real grand (Steinway or the like, not any grand) will do that. Furthermore, would you say that your upright render everything properly? I think not. So, between a not-100% tuned and calibrated upright and a digital, I like the later better.
2) I think that Ryanyee over-simplify the neighbor matter. I'm sorry, but no one must tolerate a serious piano practice but the pianist. Listen to six hours of fragments and repetition (not to speak about mistakes) is something nobody deserves. If you want a counterpart, consider that in front of your pianoroom window there is a guy that listen to Linkin Park all the time, with the volume seriously pumped up. Would you like it? It would not affect your study?
I'm living in an apartment for some time, and now I'm a happy owner of a CLP-240. My upright is still here, but I only use it for a couple of hours weekly, to play pieces that are done and feel the consistency of its sound. To my everyday practice, most of it is done after 20pm, I use my digital.
Of course if you talk about a big beautiful concert real black grand, there is no discussion. However, I'm somewhat lucky since in my workplace there are two, and it's easy to find time to practice on them.
Best wishes!