From what I have found after mainly useing these 2 exact lures over the past 6 years every weekend throughout the kok season is that the catch rate is close to the same, day in and day out. My opinion on the "e" chip is that it's more of a sales gimmick. I have seen days where one lure will out perform the other though, just depends on what action they prefer each day, and what speed your trolling...seems like a mph either way will give them a different action, and some days they will go for one over the other. Where I fish the water is very clear, and the koks like a slow speed, so I use a longer and lighter leader. After years of useing these 2 lures on each side of the boat, the majority of the time in my experience is the catch rate is equal. I had one day last year though where we had EVERYTHING on each side of the boat EXACTLY the same, other than one was a hot spot, the other a pro-troll. On one pass, in around 20 minutes the pro-troll got 5 fish to nothing on the hot spot side. That has never happened to us before in 6 years of fishing with these...it was definitely an exception.