I've used all sorts of pickups over the years, from Di Marzio, PAF's when they were really the only aftermarket pickup manufacturer in the '70's, to really cheap Chinky stuff, so I think this is a fair review.
I took a chance on a pair of Yibuy P90's from Ebay to fit to a guitar I was selling & was pretty well amazed by the way they performed.
First off, they came with braided wire, which at least looks correect, but when \i installed them i\ was more than surprised by the way they sounded. They had the lovely fat single coil plus sound you would expect from a much more expensive pickup & when they were driven, they still sounded like a proper P90. I must say, I was very impressed & at the price, I have to say, they are amazing!