1) Firemagic ~$4800
2) Lynx ~$3500
3) AOG or Weber ~$2000

Cost no object I would get the Firemagic. Made in S. California with cast solid 316 stainless steal burners. Virtually indestructible. This is "surgical stainless" used for surgical instruments and some high end Swiss watches.

Next is Lynx. Made in the USA with cast brass burners. They can worp over many years. It will last you a very long time but you may need to replace if given heavy use.

AOG uses SS sheetmetal but is much thicker than most companies. Firemagic's cheaper line.

Weber. Kinda of thin SS sheet metal burners but cheap to replace and Weber has an excellent warranty. Something goes wrong,you call them, they send you a replacement part.

In the link below you will see cutouts of many grill burners. You will see Cal-flame also uses a cast SS. They are very expensive and yet are made in China.

Here is a link that might be useful: LINK