I was looking to buy 9800x3d but i don't know if i should hold out for 9950x3d?
Easy.
Are you into gaming and just gaming, nothing but gaming?
9800X3D
You need extra horse power for more elaborate workloads and multi core intensive tasks.
9950X3D
Gaming and streaming for the most part currently on twitch
I think you are good to go with the 9800X3D.
Try getting some opinions from those who stream what they think about 3DV cache CPUs
