I have only had it for a couple of weeks, but results are fantastic. Need some new cookware for the stove top ;) (infrared cooktop) not all cookware is created equal. I have used the convection oven with a bake time cut in half :). Excellent heat retention for oven. Proper cooktop cookware results are a bit different. Cast iron has a bit better results for cook times. Aluminum and cooper do not conduct heat well. Cook time results are twice the time required.