If you're talking about the Carbon 7 SE Mk II tweeters, from my phone conversations with Fritz he thinks the new tweeter is better than the one in the original version. Never heard either version but I would trust his choices. Also the Rev 7 SE gives you a similar speaker as the Carbon 7 albeit with higher line drivers and a higher corresponding price. In the end it will come down to whether you feel comfortable trying the Be tweeter or want to take the safer route with one of the silk dome tweeter models. While the Carrera sounds good with most any amp I found that it does love tube amps the best.