FRIENDS WITH CATS (or who have had cats)

So we have the four cats, right? Three of them have absolutely no litterbox issues. Even if I forget to clean the box, they don't gripe about it, they'll still use it. There's four litterboxes in the house - one for each cat - in different rooms in the house (one downstairs, one in my office, one or two in the animal's room, depending on if I need to move one somewhere else temporarily).

Dean, however, is a whole different issue. Dean will not use a dirty litterbox. Dean will inform us of the box not being up to his standards by peeing on things. Namely: the bed. He'll do it while we're sitting right there, if he can.

Is there anything that can be done to stop this? Is it just the one cat being a nitpicky bitch about something? He'll use the box up to some intdeterminate time that he deems wherein the box is no longer clean enough for his liking, despite the other cats having no issue and the box really not being all that dirty.

It's really frustrating because we never know when he'll decide that the box he chooses to use that day isn't up to par. He's otherwise a really good cat and I don't think he's pissed off about something and it peeing on our things out of spite.