Ahhhh thats cool. I am always open to learn and thats why I love this forum. I rarely come across LX models so I am not an expert with them vs the others that I can resto blindfolded. I did not know about the high plus sear option on each burner....that is very interesting. Now that tells me that the regulator or internal valve body and orifice jetting is different with the LX models that you speak of. So I am assuming they can zip right up to over 700 for a blazing hot grill if this feature actually works whereas the typical 335 will slowly climb up into the 600's which of course is more than plenty. I find that my additional sear burner gets that zone blazing hot and does a great job. I am now excited to put this LX through its paces. I have an old Gen 310 front control and a Gen II E 610 that have to be finished tomorrow but after that I will let the LX cut in line and be next man up. I will report back ......heck I might even cook a steak on it before I clean it up.