Angels & Demons is technically better than The Da Vinci Code in many regards especially in terms of pacing and a tighter story and while Tom Hanks delivers in his performance and Ewan McGregor and Stellan Skarsgard make for fine supporting roles.
The Da Vinci Code has more or less remained the same in my eyes since seeing it in theaters a decade ago. The acting more or less steals the show over a bit of a convoluted story, yet the mystery and adventure aspect makes the nearly two-and-a-half hour running time bearable.
This 4K mastered release of Angels & Demons is certainly an upgrade over its Blu-ray counterpart, HOWEVER, it’s not a huge one nor something worth the $15 price point for a release that didn’t bother porting over the features (even if they were placed on a second disc). Still, if you have the proper equipment you’ll see a good difference.