[solved] best chipset for bios mod

[SWAT]

No sense, more than 2MB we can't use, because DC doesn't have additional address lines for BIOS chip, as for flashrom.
One really difference it's a speed of chip programming, some chips support "page write" (few bytes per iteration), some only byte per iteration.
But I think there is no need to accelerate the programming process, it is not so common we do.