Thanks again for your kind help!
I feel a bit embarrassed that this is my first post in this Forum and it took me so long to get back to you.
In any case, the Z821 seems to be pretty much what I would like to try out as a successor of the LL P5R.
@MascaratumB, I also found your Review from August 2020 about it
I will get one and try it out 
The Olight Javelot Mini looks like an even more compact IF22A, very nice light!
I didn’t find the Z1 at the moment.
Thanks again to everybody!
I will let you know about my experience with the Z821
Chris