Sorry if ya feel offended- not trying to be insulting at all. Plain fact is there are tons of different setups for sluices and all will catch gold. Some may be better than others, but the worst of the bunch goes by the wayside pretty quickly. As for the rest, I can't how any can be superior in any way in all circumstances.
But every time someone comes out with something "new", they always claim it to be best, or at least better than others. I put new in quotes because John is right, its been done before.
Again, if you like it and it works great for you, by all means stick with it. But until you find someone that has run a thousand yards or so or the exact same material through this sluice and another in side by side comparisons under strictly controlled conditions you can't convince me that any one is better or best, ever.
Lemme give ya an example. I can pan gold with a Dixie cup, a pie tin, and even my bare hand. Done it before just for giggles. Is the standard green pan with riffles cut in better? Hell yes. Is the pan with riffles cut in AND a little recessed pocket even better? Or wider riffles? Or more riffles? Or the ones with riffles, a rough side and a smooth side?
I dunno, I can pan with any and all and catch gold. Good gold. Quickly. I can win panning contests with just about any.
But theres guys out there 90 years old, can barely walk, and can kick my butt with a plain old riffleless copper pan.
If it works for you, use it. But don't get caught up in "bigger, better, faster, more" purchases. Try new stuff and see if it works. If you can do that without laying out a penny, even better. If you are continually upgrading your equipment, I think you're gonna find out you'll have wasted your money when you shoulda been out digging instead of tweaking!
Ain't trying to knock this guys design, I'm sure it works just fine.
Just my two cents- explained a little better, I hope.
tinker toys for little boyz-seen 100's a these flops over 50+ years a gold grubbn'- 
John
