Execution:
Very well executed soundtrack in all aspects.
Clarity in dialogs,correctly implemented surround effects and ''heavy duty'' scenes.Although i cannot tell exactly wich ones are going infrasonic due to my system's responce(15'' b&w,incapable of doing under 23Hz) there must not be any problem ''down there'' given the quality of the rest soundtrack.
Overall:IMHO a 4.25 would be adequate.
Recommendation:
Buy if you are a cartoonish type of guy(I am ) or have kids under 12.
Rent if in all other categories.Ok,not on par with Toy Stories or HTTYD in overall execution,artistic included,but picture quality is top notch and could be used as a demo in high quality home theatre systems.
And due to the p.q. i am most curious to see it in a friend's 3d projector.