If you want a CPU upgrade without upgrading the whole rig-- entailing a motherboard change-- then the
5800X3D (currently $317) is your best choice. A la carte, it's not quite as strong a value as the
5800X (currently $214), but it makes more sense because it's your best-in-slot option, and it's ~5% shy of the 7600X/7700//7700X/7900X/7950X in games. In addition to the Tom's Hardware roundup linked for you, here is TPU's latest processor benchmark result:
If you go to expense of upgrading the whole rig, wait for the 7800X3D. It's the only CPU that will offer a performance upgrade worth the added expense of upgrading the whole rig, rather than going with the 5800X3D, that doesn't waste money on cores you don't need like the 7950X3D. The expected MSRP is $449. It comes out on April 6th, so you only have a week to wait.