I LOVE my Summit. I can cook low and slow if I desire using the smoker box burner and the opposite side burner, both set on low (grill will hover at around 250-275) or turn all burners to high to cook plenty of steaks on direct high heat. I haven't had the problem FPM described with my summit or my previous genesis silver, which I had for about 8 years. In fact I replaced it only because of the outdoor kitchen I built - DW wanted a new stainless grill to go with it. I gave my genesis to my f.i.l., and it still works like a champ, going on 11 years now. I replaced the gas hose and ignitor before I gave it to him; otherwise all is original.
I do give it a good cleaning every 2-3 yrs, and honestly, when I do this, it takes no more than 45mins to do. Otherwise, I burn any food residue off every time I cook by turning all burners on high after everyuse - any residue in the fire box turns to ash after a few minutes.
Before I bought the Summit, I tried one from Costco that was a beauty, and also had an oven, but only performed ok; and a Jenn-Aire from Lowes that also was beautiful, but garbage. I returned both, bought the Weber and have had no regrets since.