Watched Robocop Director's Cut 4K this weekend. We had been watching "RoboDoc" on Prime, which was 4 episodes on the making of RoboCop and it was pretty interesting. Lots of interviews with just about every character, even the "models" ("B1tches leave"), which was quite funny. That was why I ordered the 4K.
It is an Arrow release and video looks really good. The previous versions looked pretty grainy and splotchy at times, but this 4K looks better than I ever remember seeing it, and I saw it in theaters lol. The Director's cut elements look of lower quality though. I had to look that up and it appears the film masters for those scenes were lost, so they were scanned from other sources. The main film was scanned from the original film masters. The commercials and news bits look bad, because they looked bad originally, partly due to how they were shot.
The Atmos track sounded very clear, but not particularly aggressive. Not much overhead, but a good amount of surround activity, as I believe the original was 4.0. Due to that, LFE isn't so pronounced.
If you're a fan of the film, it is probably worth it. I haven't owned it since the DVD came out and this was a big upgrade.