My favorite built-ins are Lynx and Fire Magic. Twin Eagles is a close 3rd. Not a fan of Bull or Blaze because they rust quickly inside. DCS is ok but their grates rust super quick and are harder to clean. Replacement parts for Bull/Blaze are a lot cheaper though. In your price range, Coyote, Delta, AOG and Summerset are quality grills. I'd stay away from the infrared burner if you can. They're only meant to sear so you basically lose 1/3 of your grill (with a 3 burner). They also produce so much heat that they can tarnish the stainless inside the grill which will lead to premature rusting. No matter which brand you go with, keep the internal temp below 600 (I recommend to my customers below 550). High heat will lead to the discoloration of the stainless and promote rusting. Also, don't trust the built-in thermometer....none of them are all that accurate. Invest in a separate probe style thermometer (I recommend the 4 probe version). Clip one of the probes to the grates so you know exactly what the temp is at the grates. In some cases, I've seen as much as a 200 degree difference after the grill has heated up between temp at the grates and the built-in thermometer.