I have rod and reel preferences for different lures/weight, water body, and casting room. I use 6 and 8 lb. Line on 2500 series shimano spinning reels, heavier line is used on 4000 series spinning reels because of line diameter. I use 5 to 6 foot med. action on creeks and rivers and for pinpoint casting , though they are not in style and harder to find. I use longer rods on open water. For casting rods the same is true for me – short rods for lighter lures and for accuracy, long rods for open water and dragging lures. Flipping would be the exception, where a long heavier action rod works great.