Got my Japanese set two days ago, only watched #3 so far in full, but overall I'm pleased with them.
Die Hard; I have the D-Theater to compare it to, and the BD is much sharper. I was really afraid Fox were just going to slap the old master on disc, but it looks like they've cleaned it up a bit. Grain intact, specs/dirt seem reduced... sure there are still some soft shots, but by and by it's a good improvement. The colour timing is maybe slightly different too, but that might be my imagination (will confirm when I can take some proper screenshots...).
Die Hard 2; I've got a cap of this, and it's actually pretty similar. It can on occasion look ok, but for the most part it's a soft affair. Again, grain is intact, I didn't really notice that much debris or anything. I think I prefer the PQ of DH1 over this. I've never really liked this one in the series that much, so I didn't spend too much time on it.
Die Hard with a Vengeance; again comparing to a cap, this is way better, probably the most improvement out of the three so far. I know some people in another thread said the DVD had terrible EE. There's definatly been some sharpening here (some slightly exaggerated grain), but there's no really offensive signs of EE (maybe ever so slightly on some street signs), and some of the facial closeups just look great. Some of the wide shots of the streets/city look nice and detailed too. One or two bits do have some noticeable noise though. Nice to finally have a good looking copy of this movie.
Live Free or Die Hard; some people have already commented on this, it looks excellent and obviously the best looking of the series. There is some black crush and funky contrast, but that's just part of the style of the movie. It is super sharp, nice and detailed. I tend to focus more on PQ rather than AQ (as you can tell
), but even I can tell you this sounds great.
Since this is the Japanese set I don't think the packaging (individual cases) is going to be the same as the US set (at least Amazon has a chunky case picture ala Planet Earth). But if you were wary about picking these up, I think it's worth the investment (in hindsight I would have ditched 2 and just got 1, 3, and 4, but oh well!). Also I don't know if this Japanese edition of Die Hard 4 is the uncut (I've only seen the theatrical), if you have timestamps of what's different I can check, but I think people have already said it won't be uncut.