For those exact specs the Asus you linked seems like a great deal but it also looks like it has soldered ram which could limit the useful lifespan (the FW13 has two so-dimms and officially supports up to 96 GiB of ram but on forums people have been using the new 64 GiB dimms to get 128 GiB working fine).

The linked gigabyte seems like maybe a good deal as well but that's also not the Ryzen 9, it's a 7. Some people (mine included) also have strong opinions on the look/quality of the case and their preferences might lean more towards FW than the linked gigabyte's glowing green look.