I had to replace my original relay valve in Aug 2021 on my '69 RS. Went with the repo from Classic Industries. Works just fine, no issues.
I also replace my actuators about 15 yrs ago, not because the originals had gone bad, but since I was that deep into restoring the front end (complete sub frame removal, etc) it just made sense to do so. I packed up the originals and still have them. Again, I haven't had any issues with the repo actuators either.
Richard