Depending on how many cuts I'm making, My first choice is my chop saw with an 80 tooth carbide. (perfectly square and clean every time) For a second choice (or on a tight space etc..) about any hand saw followed by a utility knife (with fresh blade) to clean up the cut.
Like so anything in this hobby, there are so many ways to get good results and alot depend on recourses available and individual skill level and preference.