Unique and beneficial effects are felt equally at all levels. No one is going to "get enlightened" any sooner by listening to LF-1 than they will by listening to LF-5. If they believe that they will then understand neither entrainment or meditation very well.
Brain entrainment may be beneficial in different levels, but how deep your meditation goes is entirely up to you
It just focuses on different brainwaves, but it's not like you are going to get less relaxed by using LF-10 instead of LF-1.
It does have it's effect on what you want for meditation, increase your creativity, reduce stress, heal your body, so you better switch between the different tracks frequently for the full package
