I work different between home and the office.
At the office, I mix it up between the standing and sitting desks, but I lean more towards sitting. Either way I use a nice Dell 24" external monitor.
At home, I sit at our table or on the couch. If the dogs are up I'm on the couch with them, if they are asleep I'm at the table. (their snoring makes me tired) I don't use an external monitor at home.