I have been giving all the apps a go as well. I was using RIF for over 5yrs prior to the switch. I grabbed the sync app as soon as it was available and was so impressed that I immediately bought ultra, mostly to support the developers. I know it’s steep, but maybe as more users start using lemmy the price will come down a bit.
So far I am very impressed with sync. I love how granular the controls are even to the point of having different settings for different logins. Account switching is super easy between several alts that I have and I am really looking forward to being able to import my community subscription to my back up instances in the near future. More than happy with my purchase and I hope the developers continue their outstanding work.