Speakers to go with existing Acoustimass 10 Series 2 speakers

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Speakers to go with existing Acoustimass 10 Series 2 speakers

I have an existing home theater system with the Bose Acoustimass 10 Series 2 system. I just got a new receiver so I can now add side speakers. I'm looking for suggestions as to what speakers I could/should add to my existing system to get up to 7 speakers. Would be great to have something that matches the look of my existing speakers.

 

Thanks!

 

John