I still like the hexagonal box of the i9's best but the internal casing of the TR are much more impressive while still having a very aesthetically pleasing exterior box.
The i9s were just kinda... sitting there in a standard cardboard box and plastic clam shell.
The dodecahedron box looks neat but is terrible from a opening and closing perspective as well as the covering bit barely staying on. The new 10900k i9 has a 3rd shell for no reason that I can tell as well, why pull it out the bottom the again out the left? lol
Only Threadripper one I've used I've opened is the first foam one which is kind of ugly imo but is easy to open at least.