Ask anyone who's seen the whole franchise of terminator movies and they will not even doubt the fact that terminator 2 is the best. It has an unbelievably well written plot and continues very well from the last film. The action scenes are so well done and the plot while being on a very similar theme to the first one, still keeps it's own identity and uniqueness.
The soundtrack is excellent and has a wonderfully nice tune and beat. It subtly differs from the original film, however I'd say for the best. The sudden change in the middle cam really change the tone and it very well changes between the dark, booming section for the terminator and the nice John Connor light hearted theme.
I really feel that this is one of the, if not only film that can take the evil and killer terminator and turn him into a dedicated protector that would risk his life to save the life of John, they executed it almost perfectly and if there were any other films that pulled it of as well as Cameron, call me curious.