I NEVER use auto-repartnering because I have always been mad at the fact that it costs money to break them up again. I have many cats that I would like to just mate automatically each week - But then sooner or later I'd have to pay 200L to break them up if I find a better partner, if one age out or something.
I would use the auto-repartnering if it was free to separate them again, but until then: Never!
-Also because of the many glitches that seem to happen with those break-up-bottles, especially if only one cat is present. I had quite a few problems myself a long time ago when I first started breeding, and was stupid enough to buy a cat that turned out to be partnered.
All in all, auto-repartnering just seems like a trap for those that don't yet know better... which is rather sad imho