Most modern sluices will catch comparable gold its just down to the operator to set them up right. An experienced prospector can catch sub 100 mesh with just about any kind of sluice, with minimal losses. Drop riffles, Hungarian riffles, vortex matting, ribbed rubber matting, raised expanded metal riffles, fluid beds (gold traps), all these are fine for fines, it just comes down to how you setup the equipment and how fast they will process the material.
However, with that said, you really should look into a fluid bed sluice. I have tried and built all the sluices out there except the sidewinder, and nothing else even comes close for processing gravels and retaining the fines. Clay is a little more difficult to work with for a fluid bed but there are solutions for that as well. The only caveats about fluid beds are they will work you to death, and they will require constant shoveling out from behind them. You can pretty much nonstop shovel into one like a highbanker if you got the flow for it. As you can see most of my equipment is homemade, so I don't make any money off promoting fluid beds, I just like showing people there are better ways.
Checkout the fine gold I was finding here with my custom fluid bed. In another spot I have also setup another sluice behind my fluid bed and found nothing but a couple sub 150 mesh in the back sluice, while the fluid bed easily had over 500 pieces of fines in it.
