@Flashlab:
If you want a speedy rom then dont use it. That might sound wierd, but there are utilities that copies the rom to ram and makes to amiga access it from there. As long as that ram isnt chip-ram or some shoddy 16-bit fastram it will be faster than the rom. For example the cpu command supplied with Workbench can do this by using the mmu if you supply the parameter "fastrom".
/Patrik