Product review (2 stars): NXR Range is made from cheap steel
I own the NXR 30 inch Gas Range and found that it's not constructed of 304 Stainless Steel but a cheaper steel which can rust and spot.  When they first started making them, they used all high grade 304 Stainless Steel--but with the new ones, you can tell the cheap steel looks different and a magnet will stick to it. If you own an earlier model, you got lucky, because the 2011 models are made from inferior steel.  Way to go NXR..