No problem with the "translucent hazy finish" ones you mention, just the old clear ones. I think plastic engineers/chemists, at the time, called it "molecular migration".
As stated, I switched in 1977. That was the year the pressing plant I used (as did ECM and Artist House) started importing them from Japan. As I remember, they cost $.07 each. I used them on all my pressings/repressings until they went out of business. I purchased them in bulk for my personal collection.