Read this first about speakers for surround systems: What Size Should I Use for Theater?
In a theater type system, when using a subwoofer, you are actually creating a three way system. Your woofer is one, the mids are the woofer in the wall/ceiling, and the tweeters are the third way. So you`ll get all the good midrange you`d expect out of a three way system, it just might look a little different in the end.
As for a recommendation, take a look at the speakers that have the closest match for the type of material you have on the front channels of your system now to match up the “timbre” or characteristics of the type of sounds that come from the speakers. We have our recommendations in our Theater Kit area here.
I am looking for a pair of in wall speakers to use as rear surround. I am looking for really great sound. I am looking at the 8″ because the ones you have are three way.
Please suggest what you think are the best for around $200. Also I want to be able in the future go with the same company for front and center in wall.