Purchased a SPX-435 natural gas.  It’s a nice grill but some of the fit and finish of the burner knobs could be improved. When you open the grill lid in any kind of wind, a burner or two will blow out and not relight… For a 2000.00 dollar grill you would expect a better wind relight system. Like another similar priced, brands grills have… a small improvement for big payoff. Otherwise it grills well and the accessories are nice. I have the griddle and pizza stone and they are great. The Natural Gas line quick connect and disconnect was well thought. One other side note I built this grill myself and it was missing a few screws from the A package and the grill lid was missing one of the rubber bumpers on a side so look carefully during and after assembly.  Quality Control was lacking from the factory. Customer service was easy to work with and parts arrived in a few days by FedEx.