Hi there 
At the moment the shop is closed, due to shipping problems with the Pandemic.
For opinions check the official threads, or use the search function…
Anyway info below,
https://forum.enlightenedstates.com/t/sapien-shop/6286/357?u=risingkundafest
Since the tags are quite different, it really comes down to your personal preference.
What do you want /need more? Protection? If so, go for the shielding. You can read more below
https://forum.enlightenedstates.com/t/new-item-shielding-protection-2-0/7108
Do you want to develop Psychic abilities? This can go from being able to see, hear, or just even feel things deeper /being more intuitively guided … To an extent of moving objects or having precognition… It depends, if so go for the IPF
https://forum.enlightenedstates.com/t/new-release-ipf-functioning/9386
If you want to store energy and be able to use it during the day, go for the Magi really 
https://forum.enlightenedstates.com/t/new-item-pendant-of-the-magi/9254
All in all, it will really come down to preference at the end. Or your primary goal…
As I’ve mentioned, the shop is closed, but you have IPF audio at Gumroad.
As for the others, there are plenty of protection audios, just as energetic ones, really…
Check, for example, the Magi has this effect and many more, but this way you can feel one of the things it does.