Product review (5 stars): Love this cooktop!
We did a kitchen remodel and for some insane reason, I decided to replace our old black Kitchenaid gas cooktop with a glass smoothtop electric (also Kitchenaid).  While it looked sleek, it was a nightmare to clean (streaked like mad) and the pans slid all over the surface.  Impossible to tell how high the heat was without removing a pan; plus it constantly "cycled".  So after regretting my Kitchenaid purchase for a few months, I bit the bullet & returned the Kitchenaid (at a 30% "restock" fee!) & purchased what I should have to begin with:  the Thermador 36" SGS365FS.  I LOVE THIS COOKTOP.  It looks gorgeous, cooks like a dream, and cleans easily.  It's so elegant and functional, I feel like a pro Chef! Plus, it's a Thermador..what more could you ask for?  I clean the stainless surface with a sudsy sponge and then rinse.  Then apply a spray stainless steel "cleaner" (to protect the surface) and I'm good to go.  I clean the cast-iron racks in the sink with dish detergent & a plastic dish brush...no problem.  This takes all of ten minutes!  The SGSX model is about $400 more, but I can't see spending that much for the addition of a glass surface around the control knobs...that seems to be the only difference.  Go for this one....you won't be sorry!