The IR Flex boasts burlier specs than most other $700 models. The stainless-steel gas grill uses infrared heat, which cooks more efficiently than traditional sources. It's also a testament to why many prefer gas: convenience. Turn a knob, press the ignition, and flames instantly rise from four 9,000 BTU burners that can heat the 500-square-inch cooking surface to more than 600 degrees – perfect for dense meats. But it can handle delicate fare, too, expertly grilling a trout that most gas models would have reduced to flakes. Another nice feature: Magnetized side carts can flank the grill or pair up beside each other. [$640;]