Most comparisons people make between shaders are not comparisons at all, because two things changed at once. If you want to know which of two packs suits your machine and your world, the test is worth doing properly, and it takes about ten minutes.
Stand in one place and do not move. Pick a spot with sky, ground and water in the frame if you can, since those are the three things packs treat differently. Note the time of day and keep it fixed, because an hour of in-game time changes a scene more than most packs do.
Change one thing at a time. Same world, same position, same time, same render distance, same resolution, same loader. Swap only the pack. Anything else that moves makes the result meaningless, and the most common culprit is a different render distance carried over from an earlier session.
Then look at motion rather than at stills. Turn slowly on the spot and walk a short distance. Almost every pack looks good standing still; the differences that matter for playing show up in how the lighting behaves while things change, and that is not something a screenshot can tell you.
Finally, give each one a full in-game day before you decide. A pack that flatters your build at sunset may be flat at noon, and the one that looked dull in the first minute may be the one that is still comfortable in the third hour.