I listened to both a few days ago. I was very impressed with the Summits. They sounded a lot different from my Quests. I also liked the Prodigy's but they had more of the character of my Quests than the Summit did. I am going back next week with a few of my own CDs. At the moment I like both but whether the Summit's are worth the difference in price is an issue. I have also listened to a big speaker for many years and it is hard to get my head around the fact that a small speaker can deliver the same impact, image size etc. However, on listening the Summit seems to do that.