Organistaion: Movie editing software's

I am very nearly finish so its important, I decide what software's I should use to edit my movie trailer. The software is extremely significant even if I have amazing, high quality footage its the editing that will give it that tense trilling effect. Depending on how well you edit ultimately decides how impressive and high quality your trailer will appear. So its important I start to look into this from now, because some Software's are extremely expensive so I need to decide my budget or if I'm going to even purchase a Software or use a free one: Below or some of the best Software's and the Pro's and Cons of them and this will lead to my final decision of which one i should purchase and use.