My father currently has a set of Bose speakers he is using for the front - Bose 501 Series IV. These speakers are pretty nice and he doesn't plan on parting with them any time soon. My question is what would be a good center channel to compliment or at least match these speakers? This is to be as a Christmas gift, so I can't just tell him to drop the Bose and look for new fronts - especially not after how much was paid for them. The price range we are looking at cannot exceed around $400 for just the center channel. Also, if anyone has any recommendation for good rear-surround speakers within the $200-$400 price range that would also compliment the system, I would greatly appreciate it. Thanks for all your help!!!