I have had my S-470 for about a year and love the even heating and especially the smoker and sear station, which I feared would be a "gimmick" but have turned out to be two features I use all the time.  The smoker in particular provides just enough heat and smoke to make the best pulled pork ever!  The one thing about this grill that is substandard is the rotisserie element, the motor is held to the grill using cheap, thin stainless steel, so if you grill a bird larger than about 12 pounds, the rod can come off as the motor flexes during the rotation.  I have had to develop a fix using clamps to hold the rod onto the grill motor.  When you pay almost $2K for a grill, you don't expect to have to "McGiver" some sort of fix to overcome poor design.  But the rest of the grill system works great.