Go with brushed nickel. Your door is kind of like a statement piece while also providing you security(the latter being the most important of course). A lot of times, people think they have to match hardware inside and out; not the case.

I agree with your hubby, ORB does not add significant contrast to the look of your door but hey, it is not like people can see it from the sidewalk or street.

Just want you to realize your front door knobs don't have to match your interior ones if you don't want to. Don't feel like you have spend a few hundred changing all of your interior doorknobs to match your exterior one. :D

Yup. Go with brushed nickel. Your front door isn't like any other door in your house so the hardware doesn't have to match. You're over thinking this. The black of your door will match the black hardware inside the house. It sounds quite nice!!