+1 on the X-caddis. Apparently the "shuck" on both the sparkle dun and X-caddis look less likely to scoot off the water quickly. Easy meal for Mr. (or Ms.) trout. But- I kind of like the splayed tails of the comparadun, just as I take great pleasure in catching fish on traditional-style dries. Just my mishigas (don't bother looking that up), I suppose!

Chuck