Some of lesser expensive cook top (less than $600), have the highest burner rated as 11,000 BTU. Once the prices crossed over the $1000 range, the burner rating is in the upward 18,000 BTU, and the 2nd burner rating of 14,000 BTU and the slow heat burner rated at 5,000 btu.
Here are couples that are good for quick stir fry..
GE Appliances Black-on-Black 30'' Built-In Gas Cooktop with Sealed Burners JGP933 800
All-purpose: one 9,500 BTU nat./9,100 LP,High output: one 11,000 BTU nat./10,000 LP,High output: one 15,000 BTU nat./13,000 LP,Low output: one 5,000 BTU nat. /5,000 BTU LP
GE Appliances Stainless Steel w/Black 30'' Built-In Gas Cooktop with Sealed Burners JGP933 900
All-purpose: one 9,500 BTU nat./9,100 LP,High output: one 11,000 BTU nat./10,000 LP,High output: one 15,000 BTU nat./13,000 LP,Low output: one 5,000 BTU nat. /5,000 BTU LP
Electrolux Black 30'' Gas Cooktop EW30GC55G 1000
Low output: one 5,000 BTU nat./4,500 LP,High output: one 14,000 BTU nat./11,000 LP,High output: 18,000 BTU nat./ 16,000 LP,All-purpose: 1-9,500 BTU nat./ 8,000 LP
Electrolux Stainless Steel 30'' Gas Cooktop EW30GC55G 1100
Low output: one 5,000 BTU nat./4,500 LP,High output: one 14,000 BTU nat./11,000 LP,High output: 18,000 BTU nat./ 16,000 LP,All-purpose: 1-9,500 BTU nat./ 8,000 LP
Electrolux Stainless Steel 30'' Gas Cooktop EW30GC60I 1300
Low output: one 5,000 BTU nat./4,500 LP,All-purpose: 2- 9,500 BTU nat./ 8,000LP,High output: one 18,000 BTU nat./16,500 BTU LP,High output: one 12,000/9,500 BTU nat.