Fantastic Cooktop

We love our new Gaggenau. We can't figure out what the other reviewer is talking about. Our cooktop doesn't make a humming noise; the burners don't go "klunk" when we turn them on. The btu's are fantastic -- we can boil a large pot of cold water for pasta in about 15 minutes on the big burner; I melt a lot of chocolate, and I haven't burned any yet on the simmer burners. Ample space between burners means we can use lots of big pots and pans simultaneously. Well built, solid construction. We installed it ourselves (with a plumber connecting the gas, of course) pretty easily.