I posted on another thread about these needles. I've been using them and they are great. They must be magic as the thread doesn't pop out when I'm sewing. Apparently one of the mysteries in life :)
There really is a difference of opinion on these needles. I had two, both were dull and I could not get them sharp, one was bent and both frayed my thread. Some ladies love them, maybe I just got two out of a bad batch.