The Definitions have better low end I bet than displayed at the show as the couch was in a room node. I asked because 4 10"ers on the back seem like overkill if anything and was told that. i hope to hear a pair soon at 213Cobra's house to hear a real life scenario.You owe it to yourself to hear them at 213cobra's home, Keithr. There, they will sound vastly better than at the show. Along with other areas of improvement, you will indeed hear all of the bottom end that was completely missing at the hotel, where IMO the setting only hurt the company's efforts to demonstrate the strengths of the speaker.
As to the other half of the question posed, my wife and I were stunned by the coherency and dynamic impact of the Watt Puppy 8's, which was the first time (of many) that I've heard Wilsons and come away thinking I could happily own them.