The reason I asked how you got to this choice is that they are so different. I've noticed that most folks that love Maggies find it very difficult to switch to a box speaker, ther render space so differently. Which is not to say the Maggies are better, they are what they are and some people get hooked on how they project sound. That being said, I think the the Harbeth speakers are really accurate at getting timbre right and if that is a priority I would choose them for that reason. I think it is really hard to say which is better overall as they are strikingly different in what they do. If you love your Maggies, I would proabably get a bigger version for my next move.