See if you can arrange to bring your Bose rig in to a local boutique store, such as a Tweeter or equivalent (making sure they have a good selection of center channels in the price range you're looking at). If you check in advance, they'll often tell you the best time. Get in there with your favorite source material, and you can set your rig up and swap out all the center channels they have to find the one that works the best for you. I've found this to be the most effective way to ensure my own long-term satisfaction.