I hears something similar about AH and never ventured there....always have used the Pyrex. I have, however, had that blue tinted Pyrex bust in the microwave on a couple occasions and after mentioning it on a couple other boards was told it was made of an inferior glass and to avoid it too.
I have five or six of the Pyrex 1 cup measuring cups along with a couple of 2 cup Pyrex. By far and away I use more of my twenty-five or so 4 and 6 ounce Pyrex custard cups for most of my injections. I also have a couple dozen 8 and ten ounce custard cups that I use before the measuring cups. I have so much Pyrex on the work bench I could have a sale on it.