It seems that apart from the environmental aspect of movie-watching, SkyBox has been surpassed by 4XVR, but before 4XVR came along, SkyBox was irreplaceable.
I use SkyBox to watch anime every week.
Feedback on Picture Clarity
I only purchased the SKYBOX player because it offers high-definition video quality, which makes watching anime very clear. However, I've noticed that this aspect seems to have been surpassed by 4XVR (斗破苍穹年番).
My visual experience is that the clarity of 4XVR is much higher.
Additionally, Regarding Watching 3D Movies
The clarity of 4XVR has already been discussed above, and the conclusion is that it's clearer.
The color quality of SkyBox, which has always been highly praised, I believe has been completely surpassed by 4XVR.
Color and clarity are key. If SkyBox doesn't support ISO and MVC, I would convert them to 4K SBS (side-by-side) and use SkyBox to watch, but when there are other players that are stronger in both color and clarity, I wouldn't go through the trouble of using SkyBox anymore.