Long rods

With the conversation going on about line length for the x45 I thought I’d revive this thread too.

I’d like to know what kind of water/flies do you fish with your longer rods ? I’m really on the fence of buying a x45 to have a rod for larger waters and I’m curious of how people use theirs. I fish mountain streams and rivers almost exclusively and my 3,60 m is working 90% of the time, except sometimes on large, clear pools or flats where I spook fish by being too close. Stories of how you use your rod would be nice to read. Photos of your streams even better.