If it ain't broke don't fix it
I had the tank filled recently. I'm glad I had the instructions and had read up on this type of valve. The attendant tried filling the tank for 5 minutes before telling me that my gauge probably didn't work and the tank must be full because only a small amount of propane went in. Like $2 worth. He had never seen an Auto Stop valve.
He was patient though and when I asked him to make sure the vent was fully open and try again he did and it took $25 + of propane!
So for now I'll keep the Auto Stop valve because it works. I did finally receive the new modern type fill valve and bleeder valve that I ordered so I'm ready to replace it all if necessary.