Product review (2 stars): knobs break; paint doesn't last
To those of you asking about the knobs, the knobs on this stove are PLASTIC and will not last.  They will crack on the shaft where they connect to the stove, and once they do, they won't operate the gas burner correctly.  Replacement knobs run from $20 to $40 apiece, depending on who rips you off (they are $20 each to get ripped off directly from LG.com.)

I bought this stove and installed it in 2012.  The paint on the front, near the controls, wears off within the first couple of months of use (cleaning, etc.)  The knobs themselves, in my case, failed all at once within the last several months, so they lasted about 2.5 years.  I contacted LG about this problem, which is widely reported all over the Internet, but they refused to replace the knobs because I was beyond the 1-year warranty period.  So I have been forced to shell out $100+ for a new set of knobs.  I'll attach a photo of one of my cracked knobs.

Aside from the fact that a critical component (the knobs) wears out and renders the entire unit useless in about 2 years, this is a great product.  I'll give it two stars -- one star for each year of useful life, before I had to start shelling out money because of LG's poor quality standards.

I will never buy another LG product again, as long as I live.  Good luck with your reputation, LG.