Well, I know you're probably going to dislike my answer, but it really depends. There are quite a few different varieties in the Z. K. Constantinople line and even within the same description, the sounds can be drastically different. I would recommend heading over to cymbalsonly.com to listen to the soundfiles of the K Cons that Tony's got up. He also lists the gram weights so you can get an idea of how different weights contribute to the sounds of different sized pies.
He may have an Artisan or 2 up there. IMHO, and this is just mine, the Artisan's are nice, but certainly not the creme de la creme of jazz pies. Actually, neither are the K Cons. Both are insanely overpriced for cymbals that go through machine hammering. I generally don't particularly care for the stick on Artisans. They are a bit too pingy as opposed to a nice "tah" sound that a good jazz pie will have. One of the factors is the weight distribution. The bells are more integrated, which some people prefer.
I'm sorry that you've limited yourself to these pies. As Christopher Bruce pointed out, there are other alternatives which are more reasonably priced, even if it's not the Dream Bliss pies. For the record, I'm a fan of the Dreams. Real nice cymbals, especially for the money. Other brands of fantastic jazz cymbals would be Istanbul (Agops) and Bosphorus and both are less expensive than the Z's or Sab's AND they are ALL cast and hand hammered in Turkey AND they sound fantastic.
As far as the Rolls Royce of cymbals, I would say not in a million years. Not including vintage pies (Isty K's, 602's, etc.) as long as Roberto Spizzichino walks this earth and is making cymbals, his product would be the best, IMHO. I would also like to give props to Steve Hubback, Mike Skiba, Johan VDS, and even Matt Bettis. All of these cats have made some incredible contributions, and still do, to the world of bronze.
