I recommend it across the front 3. When I purchased my main L+R I could not afford the matching centre at the time and went with an older MTM model in the interim. It drove me crazy as it was very evident that the centre dialogue sounded different. Now that I have the matching WMTW centre the system is well balanced. For TV and movies the centre channel gets a lot of content, so unless you watch little TV and play mostly music, I recommend getting the best centre you can afford. I would go so far as to say that a 2-channel phantom centre is better than a mismatched centre. The exception to that might be a situation where you have a lot of family members sitting off to the side outside of the sweet spot, in which case you need that centre speaker to anchor the dialogue to the middle.