Keith
I can't comment on the CDNs. I had hoped to cast them last month, but the first Eastern mini-clave was cancelled because of weather. They do, in fact, sound very interesting and am looking forward to trying them. I can say that the Burkheimer is light in the hand. Mends beautifully.
I also have the Burk 1338, which is really more of a 7 weight. It's very nice, but I really prefer the 1398. In my opinion, a much more complete rod — very light, powerful and versatile.
Perhaps Tyler has cast both rods.
Bill