These are my recommendations, in order of size and price:1. (5) Professional Series four Pi speakers
2. (3) Pro four Pi for left, center, right and (2) Theater three Pi speakers for surrounds
3. (5) Theater three Pi speakers
4. (3) Theater three Pi speakers for left, center, right and (2) Studio Series one Pi or two Pi speakers
5. (5) Studio Series one Pi or two Pi speakers