This line is the one to make beginners get the right feeling for timing from the very first moment they use. In my courses the performance of the beginners have changed dramatically when using this line instead of a common floating line. They could feel the rod work really well without carrying a whole lot of line in the air. They were able to work with this weight without putting power into their cast and ... the line shoots like hell. It is a really perfect line for them. So if you are a beginner, choose this one!
Of course there was also another idea behind this taper. The line allows the fly fisher to work well in smaller to mid sized rivers where there is only few back space available. For such situations this line is the best choice. You should always have an Opti Stream with you. Especially when wind shows up this line is the one to choose to cast right into it and turn over your leader without any problems.