I am not a fan of disc locks, as I have a bad memory and if you forget to take the lock off before you drive off, bad things can happen. I know there are ways to remind you that the lock is on, but the risk it too great for my taste.
My preference is to use the fork lock and cover the bike with a cloth cover, with maybe a lock on grommets along the lower edge to make it more difficult to remove or lift the cover. Out of sight, out of mind. If a thief wants your bike, they will just haul it away in a van, placing a skate board under the wheel to get it into the van. But if they can't see what is under the cover, then they are less likely to think about stealing it.