For me, it's better to update the bios everytime the new bios is available. It's not difficult, and the newere bios always contain bug fixes and sometimes introduces new features. Probabbly you don't need the bios features at this moment, but it is a whole lot easier to upgrade now, and when you buy a new device you just install it, compare to not flashing the bios, and then if the new device doesn't work try to find the bios update.