I think this is subjective, to be honest. Personally, I do my best work alone without distraction from others. While I do like being social over coffee or lunch, when I have to write code or prototype/tweak a system, I don't want talking, chatting, or other people's music in the background. This is what works for me. I turn on the Trance channel and grind it out. I can get more work done in half a day like this than in two days working with others. Thankfully, my job is largely dependent on what I can offer and not on pure teamwork.