Would kind of field hockey stick is best for defenders?

So I've been playing field hockey since 7th grade (but skipped 8th) and now I'm into my sophomore year in high school and I just came to the realization that I have been using the same stick that I bought in 7th grade O.O... I heard defenders should get sticks that are slightly higher than your hip bone but what kind of head should the stick have? Also, should I get a heavier stick than the one I had before (which was super light)? Also any specific sticks that won't break the bank at Modell's? Thanks :)