...will likely tell you to avoid Bose if possible since they don't generally offer the same sound quality for the price you can get elsewhere. My vote is to look at other speaker brands to fill in your gaps.
Have Bose 301 speakers that I want to use as my main speakers to build a 5.1 system. Have a Samsung 7.1 receiver. What Bose pieces should I get that will give me best sound for lowest price? (center, rear, subwoofer???)