Ive used the AF routines in SGP, Voyager and NINA.
The results are pretty comparable, and they all work well, and sometimes all have issues from time to time.
I used to be a huge fan of Voyager's process, but had all sorts of issues when I started using the RASA 8 and Celestron focus motor. I found using the local field didnt work well on the RASA for some reason and sometimes got results that were clearly OOF. On my other rig (moonlite focuser, and Skywatcher 190MN) its been very good though, and much faster than NINA or SGP.
At the moment I have settled on NINA as my astronomy tool of choice, and so far its AF routines have worked well with the RASA8. It's simple, reliable and easy to understand. As long as you can dial in your step size, it works.