Yes I use the CE6B models. I'm afraid they have since been discontinued as I found out recently when going to buy another pair. Cosmic informs me they are able to modify their 6P model to give a more 6B like response, but are also apparently bringing a new model out that will "replace" the 6B in their line up, so I'm waiting for those to drop before I make my mind up on whether to get those or some modified 6Ps. Another thing for me to bear in mind is, now I'm using a Porter and Davies BC2 stool, the added low end of the 6B can be too much at times, so maybe this time round I will just get the 6P for a flatter response.