Stance behind the plate

[CentralINRef]

I am starting my first year in baseball and have a question about which stance is more common and what are you opinions about each. I have seen umpires in both the Majors and at the college level us both the box and scissors stance so far this year in games I have watched. Are there any good reasons to use one over the other or is it just personal preference. I have practiced setting up using both at home and I believe I could become comfortable using either. I have the luxury of having to very good veteran umpires helping me in answering questions so far, but one of them uses scissors and the other uses the box stance. One good thing about this is that the association that I have joined for baseball has preseason clinics 5 of which I will be attending. 4 of these clinics are actuall Varsity preseason scrimmage games so I will get some heat of the battle time to test either of both before I do a game that counts. Opinions on this would be much appreciated.