I have a 2015 2510 XLD with twin 150's. I have been very happy with the performance and fuel economy. With the 150's, I top out at 43 mph, my sweet spot is 3800-4000rpm, with a speed of 24-26 mph at 2.0 mpg. I do have Permatrims, which have helped a great deal. Most of my fishing is with 1-2...