We've got several Angus fans here!
Swizz swears by his mini-long tom. One day on CC he got more gold out of it in 9 buckets than I did dredging.
http://angusmackirk.com/shop/mini-long-tom-sluice/Here's the day he got 2 grams with it
Click to view attachmentOne great thing about the drop riffles, you really don't need to clean them out as often as you'd think. Unless they're completely clogged with black sand, the heavier material (gold) sinks to the bottom of the riffle, pushing lighter material out. Swizz goes all day without cleaning out his with minimal apparent loss.
I have 2 Angus sluices, my big Alaskan Flare and my prospecting sluice, the Grub Stake
http://angusmackirk.com/shop/grub-stake-flair-sluice/http://angusmackirk.com/shop/alaskan-flair-sluice/The great thing about their little sluices is how easy they are to set up; they require minimal flow (obviously you have to feed it slower).
One day out at A-bar there was 6 other folks on the creek. They all had AM sluices!
I'll be at A-Bar Monday and will have mine with me if you'd like to check them out!