@pyrodetector "TL;DR" = "too long; didn't read." Nothing personal. Just a common internet acronym. It means, in effect, "What's the bottom line?"
Dear @NeverDie Thanks a lot! I am not an experienced user on the internet forums and you help me be getting better.
In order to say which sensor is the best, one has to determine the criteria. I research the dynamic behavior of pyroelectric detectors. One common rule is true for all pyroelectric detectors: the higher the AC responsivity, the higher the noise, the higher the current consumption, the shorter the transient response. And vice versa. If you want to gain more knowledge on pyroelectric detectors, you can build an experimental setup/bench similar to mine for testing your pyroelectric detectors. I wish anyone had such a bench and we could share the results with one another. Probably, closer to spring, I will test the sensor you mentioned above and publish its transient response here.