The Quicksilver character is in both Avengers: Age of Ultron and in X Men: Days of Future Past. To me, the character was much better in X-Men. The acting was better, the power display was much better and to be perfectly honest, the movie on a whole is better! Avengers Quiksilver was not there long enough to make a difference in the movie and added nothing but another hero to an already overloaded superhero movie.
I know Female Perspective may have a comment about this.