Why settle for one when you can get a sectional that has recliners, couches, cup holders, etc.? I was always against them because I thought they were ugly, but bit the bullet when I realized it fit my new living room's space perfectly.
I have no Earthly idea how one would use a computer comfortably from a couch, so chairs win by default. I'd have to get one of those sets of attached recliners to replace my sectional sofa, but I could live with that.
Couches, easily. I just moved a couple of weeks ago and don't have a couch yet but plenty of chairs and my bed. It is not comfortable at all when trying to unwind from a day of work by watching TV sitting in a chair, lying down in bed, or sitting/lying on the floor. Playing video games is even worse since you need to pay more attention to the TV.