Here is the workhorse cooker I use. It's the Camp chef 90. It has 3 burners @ 30,000 BTU's and it allows me to use the additional modules (2 burner BBQ module (Did 18 Filet Mignon on it) -(2 BURNER FLAT TOP)-(3 BURNER FLAT TOP). So I can griddle or BBQ easily when needed. It also packs down into a small footprint. If I just need 1 burner flat top, I use a cast Iron pan. If I need a 4th burner, I add my turkey fryer @ 36,000 BTU's. The camp chef is a bit pricey, but worth the money, if you are the Iron Chef in your group and enjoy cooking. The cook tops are cast iron, so it took me approx 4 trips to make them non-stick.
Gas Usage: I am experiencing approx one (1) 20lb bottle every 3 trips which are 3 days in duration typically. Because of the BTU's of each burner, I have found that I can not run it any higher than 25% to 30% on the dial. My cooking temps never exceed 450 degrees ideally.