Well this is not a what's best list but rather a most significant list. So it isn't about being impressed, quality wise. To me that means the speakers have to be steeped in historical significance. The 801 has got the CLS trumped in that department especially when it comes to it's significance to recorded classical music. IMO the Quad ESL was a game changer. The CLS? I think not. The WATT at the very least influenced the hi-end market and at best put back focus on the need for better monitoring gear on the live recording front.
Oh and by the way, if the speakers you call clones were in fact clones, you might want to take note that the KEF 105s and B&W 801s as monitors over passives, were established speakers before the Watt/Puppy ever saw the light of day. If they were clones these were what they would be clones of not the Watt/Puppy.
We all know they aren't clones though don't we. To be fair calling any of these speakers clones would be the equivalent of calling the CLS a Soundlab or Acoustat clone. They are all at least as different if not more so.
Jack
You got to stop making so much sense ... Good remarks!