Both of us primarily used the Echo SR while experimenting with these lines. That is how we figured out how valuable they can be used for swinging flies. I had one of my best days last Fall on a local river experimenting with one of the demos a the 6 switch. When nymphing with the switch and trying to get distance you have to be very patient and let the rod load the line. From a boat they work great. I have not tried this line with the Decho, rather the TR and Classic. They work great on both of them.