Pros: The movie had astonishing CGI. The 3D was good, though not as good as other movies.

Cons: The voice acting was sub-par, especially for a Disney movie. They chose some big names, and some people will assume that means they will do good work, but these voices were not good matches for the characters. They were terrible choices for character voices, nearly all-around. In addition to that, the lack of facial expressiveness made a huge negative impact on the entire movie.

Summary: The movie is a lifeless shell of the original, dressed up in a fancy new CGI package. This may give you some level of nostalgia fix, and the CGI is a shiny distraction, but that's all it will do for you.