Originally I thought I wanted the Genesis series grill, but discovered Weber now locates the propane tank on the outside of the cabinet instead of the inside on the Genesis. I wanted to build-in the grill for an outdoor kitchen and this configuration did not work for me without some modification to the cabinet. Thus, I chose the Spirit series as the tanks are still located inside the cabinet. So far, it seems no sacrifices were made in settling for the Spirit as the same level of Weber quality you would expect exist in this entry level Spirit series.