When I post an updated version, I'll post the link here.
Now, just to note again, this document is just about stacking.
That's what I'm mainly concerned with at the moment.
I'm pretty happy with my post processing, but with my Dobsonian I capture very short exposures and have typically 1000-3000 subs to stack and SIRIL is very fast. So right now I'm still in the process of evaluating the speed vs quality vs "working disk space" requirements of APP, SIRIL and PI to see if APP and PI have any significant advantages over SIRIL in stack quality that warrants their much longer stacking times and higher resource requirements (higher if I use SIRIL's .FITS compression).
So far I haven't spotted any significant advantages for APP and PI over SIRIL 1.2beta other than one thing: APP's multi band-blending mode does wonders on a rotating field (i.e. field rotation over an imaging session) especially if the consistency of the background gradients are especially important, such as for large dim nebula. That is one area APP can't be beat, by SIRIL and not even by PI.