I always thought that the Ghost Summoner Spell was essentially the more "noob" version of Flash. Recently, however, I have seen several pro-level games (MLG, PAX, etc.) where the pros do indeed get Ghost instead of Flash. I don't understand the logic behind this and was hoping someone could enlighten me. I've seen it a couple times, but the champion I specifically remember it on was a Shen.
The only thing I could think of was that Shen can already use Taunt to get over walls and obstacles, so perhaps Ghost would generate more distance in the long run... But even this seems like a stretch.
Thus the question: When and why is it more beneficial to get Ghost over Flash?
