I understand your confusion. Never the less, the one I got is much more responsive, faster off the line, and doesn't growl or whine.
Just because they're all supposed to be the same, doesn't mean they are. You've never heard of lemons?
You've never heard of someone getting something everyone else loves and theirs doesn't work right?
Or are you simply looking for an excuse to write 'soap opera' a few more times?