I love my DPN Quicksilvers, too, especially the small sizes for socks! Although I've had mine a number of years and don't know if they've changed recently, I suspect you just got a defective pair. Be aware, though, that just like most other brands and materials, the surface of the needles does develop a patina over time that seems to make them smoother and even better!
A similar needle is made by Inox (this brand is also marketed under the name "Prym".)
Knitting is more like tying your shoes than it is like patting your head and rubbing your tummy at the same time.