Re: one film edit
Some bits of the books did go on a bit, so cutting them out of a film where the film representation would taken even longer would not help the story. However one film seems to be most about dwarves singing, and the next morphed into tedious kung-fu / wire-floaty / unfeasible action scenes and it all felt like contrived filler particularly as it didn't even add to the film as a whole, it took away.
However having seen the first two... I'll try to avoid the last but may not be successful.