Nokia had good build quality most of the time, but why the hate on MS build quality? Surface Pro 3 (and the other Surface devices) is a great example of MS build quality. Sure, the 535 is nothing to write home about but seeing what they are able to deliver Surface-wise, I'm pretty sure that once they start deprecating mid-range and high-end Nokia's, build quality will be much, much better.
(btw, Samsung build quality is meh-ish IMHO, even the Windows Phone devices; I'd much rather pick HTC or Blu over Samsung then)