I replaced a Dacor cooktop that was around 12 years old.  Nothing on it worked at 100%.  I use my kitchen more than the average person, and I am beyond thrilled with this cooktop.  No plastic on the knobs (yay, after having to replace plastic ones that were insanely expensive).  Wonderful heat control, heavy grates that lock in place so they don't move when I scoot a heavy pot, and the heavy griddle are some of my favorite things.  I cook mostly with cast iron, and my skillets fit with room to spare.  Also, it is so quiet, and the ignition is literally instant.  I was worried somewhat that I would not like the front controls, but I actually love them, because there is more cooking surface with this configuration.  So far, it is cleaning up wonderfully, and I've stocked up on the cleaner that came with it.  I could not be more pleased with my choice!