I would go w/ a cat, but make sure you pick one out that is friendly. Maybe get one on death row from a local pound and do a good deed while you're at it. Cats do meow, but it's not loud at all. I've found them to be fun and loyal companions, they're devilishly smart too. Some folks have allergies (as do some cats), but the short hair cats don't make people react as badly as the long hair ones.
We had a rabbit for a while. They fall into my category of "doorstop pets". Not a lot of interaction or personality, they prefer to sit around and munch on a carrot. Cats DO like interaction, the older ones get more like couch potatoes until they see something scurry somewhere, then they're highly awake. My last cat slept between my wife and I for 8 years, while her sister slept on her own bed in the spare bedroom. They're like mischievous children, although Sissy the cat was more like my best friend and a LOT less upkeep than the wife! Nicer too when you get down to it.