I do, I am using their HD series with the EF woofers. I think we have the same tweeters. I used to own a pr of BA pro 6.4s too. I upgraded the BA to a pair of diamond audio hex, it was night and day. The hexs are so much better than the BA pro. (not sure about the 6.5s thou) anyway, I replaced the hexs to my current pr of CDT HD as I kinda lost interest in car audio, and I got the HD in a group buy with 2 prs of tweeters, etc, and one of the diamond tweeter/crossover was going bad on me. So getting back to the question, I think the CDT tweeter is smooth and laid back, a bit too laid back than the diamond's tweeters. I never liked the BA tweeters, they hurt my ears. The CDt woofers can play deep and loud, I don't even use a sub anymore. Are you getting the messed up color ones for $149? not sure if they are still available, if so, its a good deal.