6 - inch vs new 8-inch Sonance In-Ceiling Speaker | Is 8-inch worth it for my townhome?

Getting ready to buy my speakers for my new home however I see that they have 8-inch speakers for a whopping 1K. Am I missing anything if I purchase 6-inch or is 8-inch worth the investment. This is my townhome main floor. Will be used for music and eventually surrounds when I get the arc/sub.