I'm looking for decent quality speakers for my desktop. I know I won't get the best quality for my price point, but I'm going to be using headphones most of the time and only need these for occasions when there are multiple people watching/listening. I don't have much space on my desk, so the smaller the better. Is there a single unit that would sound just as good as a multi-piece setup? If I will really see a massive difference, I'd be willing to spend a little more, but I'd rather not if I can avoid it.