When I decided to upgrade to Atmos I was a bit skeptical of just how much better it could be over 7.1, and how much I would enjoy it. Therefore I was not going to blindly spend a lot of money and effort up front. That meant researching to find reasonably inexpensive in-wall/ceiling speakers that had at least a few good reviews behind them. I figured if I really liked the Atmos effect, but found the speakers somewhat lacking I could always upgrade again, later. The speakers I chose were inexpensive, relatively easy to install, have a frequency response: 40Hz-20kHz, and have moveable tweeters. After nearly 2 years of use I can say that I'm very happy with the results and consider the Atmos upgrade one of the most significant upgrades I've ever made to my system. Even better, I feel no need to install larger or more expensive "matching" ceiling speakers. Since I have multiple subwoofers, I have no need for significant additional bass coming from my ceiling. I know the prevailing wisdom is to use all identical speakers in any surround setup, and if you have the money to do that go ahead, but I've been very happy with a less expensive solution.