Some good suggestions, for the "one"...Bill's for sure. My main reason for using different set-ups is to get the most enjoyment out of our sport. Basically the outfit that will give me the most feel---bite and fight, for the type of fish I am targetting.
I want to be able to have a good fight, but, be able to land the fish in a decent amount of time, should I wish to release it.
I, like many here, can't always afford the perfect outfit for each type of species, lure, line etc...but I try to come as close as financially possible.
I COULD use a 7 foot light action rod for steelheading, in fact I did a few times "many moons ago", but, I much prefer a rod of at least 9 feet.
What about you bass guys out there who like to fish heavy cover...are you going to use 6 lb test with a medium action rod? Good luck getting them out of there.
Yeah, we take it to the extreme at times, but, for me and many others out there, getting that new outfit (for whatever species) is almost like a kid at Christmas.