Range was delivered 2 months ago in late summer along with our 3 other new LG stainless kitchen appliances (that all look so sleek).  We have not used it that much but so far we have had no issues.  Love the two front burners that have a choice of pot size; I tend to use the front burners to cook and it is super nice to be able to select the small size for my smaller pots and pans. Especially like the "power boil" option.  Have not used the "warm zone" yet nor the convection oven feature. Regular Oven cooks very well! Very satisfied with my "new LG kitchen"!