Thanks. My communications with both Dave and Dina were very informative and interesting. Their customer service is first rate. Based on my objectives for speakers, Dave had recommending the ribbon for the Horizon and the NrT tweeter for the Towers. I decided to splurge and get ribbons across the fronts. Dina found it humorous that I was not going with Dave's recommendation. I'm sure the NrT tweeter is great and one day I would love to listen to the Towers with the NrT tweeter to hear what I'm missing out on.