Hey!
What in particular are you curious about? It’s a NTAG216 but in a flex form factor. It’s the same chip in the NFC side of a NExT and in the xNT. Implant positioning tends to depend largely on use case. Don’t install it on areas where there is a lot of flexing (joints etc) or p5. Most folks seem to install it along metacarpals.
Regarding the Apex… The sort of security it offers is the thing you don’t realize you would benefit from until after something goes wrong. Not to mention applets are still being added to the offerings. In that sense, it’s quite different from all the other offerings: it’s not a static “this is all you can ever do with it” thing, it’s still evolving. Even if all you want to do with an NFC tag is have a giant NDEF container (which is what most people seemed to use the DESFire implants for), the Apex offers vastly more storage than anything else we offer.
Hopefully that didn’t come across as a sales pitch, haha. I love my Apex. It is a part of my daily life.