Great set of movies, but I have one significant gripe about this set of discs. Don't know about you, but when I'm buying a Blu-Ray disc, I'm expecting the best quality video and audio money can buy. In this case, you're not getting either. Discs 1 & 2 video quality isn't very good (understanding that these are older movies).
The biggest issue I have with this set of discs is the 2nd Disc is "missing" it's DTS HD audio track. I've received a replacement set of discs and I have the same problem. To me, this is a pretty significant/pathetic oversight by 20th Century Fox. It's also some false advertising, as it does state that the audio tracks on this set of discs is DTS HD Audio.
Despite the issues with Disc #2, Disc #4 (Live Free or Die Hard) is wonderful disc. Video is full 1080p quality and the DTS HD Audio track is clean. These movies are still fun, exciting and have plenty of re-watch potential. Hence my 3 star rating.