1720 has a lot of reported problems, so I would say avoid that one. At least you can go back if you want to try it.
2004 has some issues which I have just tried to summarise in the other "2004 will not allow BIOS flashback" thread, but overall I think it seems to work for most people. Remember though, once you change to 2004 you cannot go back so if you are on an earlier BIOS and everything works, I see no reason to change it at the moment.
Z690 Hero, BIOS 2802, MEI 2336.5.2.0, ME Firmware 16.1.30.2307, 7000X Case, RM1000x PSU, i9 12900K, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 22H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.