I had been an advid whirlpool owner for years but was just never completely satisfied.  I finally decided to take a chance on another brand and I was completely blown away.  Not only was there a much better use of surface area considering it is a 30" cooktop, but the amount of time needed to boil a large pot of water has been greatly reduced.  I'm not talking about a 5 ot 10 minute difference...I'm talking about a 20-30 minute difference for large pots of water.  It's easier to clean, I'm able to cook with more pots than my other cooktop, and it's easier to control the heat setting no matter if I'm trying to simmer something or rapid boil something.  I'm beyond thrilled with what I purchased!  No Regrets!