P3 with thinner skin than P0 I would expect a better read.
It would be difficult to quantify as it depends on your particular install.
I had my P0 installs done shallow, and my hands a pretty skinny so I dont really have the same struggles I see some people on here get.
But I’ve seen others with deep P0 installs and / or fat hands that I think a P1-P4 install would be to their benefit.
I’m a fanboy of the FlexNT and the performance of it.
I normally recommend it as the “Business card” implant, but equally, if you have a compatible reader, it is a great option.
With a FlexNT and FlexEM, You would have yourself a pretty awesome “FlexNExT” alternative
I have always found the swipe technique the most effective, starting just outside the reader and swiping through the perimiter perpendicular to the implant across the antenna on the perimiters
If you can