I love the Dark Rock Pro. Used it in two builds so far, and it’s amazingly quiet. I opted not to go with the NVidia 50x0 series because I expect demand to be outrageous and prices to be high by then because of tariffs. At least I can get my hands on a 4080 Super these days. I literally just upgraded my parts list to include the X870 for exactly the reasons you stated. I’m thinking of going with the 7800X3D to save some money now, and maybe upgrade to the 9000X3D in a couple years if I ever notice performance issues. I primarily use it for gaming, and word on the street is that the 9000 series just doesn’t add enough to gaming performance.

I’m not going to re-use the Define R4 case. I would probably get something like the Torrent (not the compact). My plan is to build the new box from the ground up and repurpose the current machine into a hand-me-down for the family.