Since I've waited until April 2021 and still can't find a Ryzen 9 5950X in stock, do I...
A. Scrap the plans and wait (yet again) for the next generation?
B. Purchase a Ryzen 9 3950X for a placeholder?
C. " Ryzen 9 3900X "
D. " Ryzen 7 5800X " (this is newest but least performance).
...
E. Other? (Suggestions welcome.) I also have two 3930K rigs that could be upgraded to Xeon E5-1680V2. The rig I already upgraded smokes the 3930K.

I should add the only reason to upgrade anything at all would be to help the team in challenges. Even my laptop performs any computing "needs" I have personally.