Replying to The very noob question - which lens is next?

So this has been the long debated question - Which lens should I get for my Canon? I have the kit lens (18-55mm) but I am looking add another lens to my aresal. I am going to be doing follow cam film, but in addition to that I plan shoot photography for clubs and outdoor. So I am leaning towards the Tamron, but I am afraid it will be the same thing as my kit.

Any advice? Or other lens' I am overlooking?