I have a brew stand with 2 of these burners (just the burners not including the black stand) I bought from Agri Supply in NC. This is the link http://www.agrisupply.com/high-press...-btus/p/64494/
I researched forever on what burner to buy and from the hours of research I spent I went with these. Now these are the only ones I've ever used so my opinion may be biased but I love them. They have a large radius to evenly heat the bottom of your pot to help avoid scorching the wort like some people claim the jet burners do. They aren't loud like the smaller burners are and they aren't very bad on gas at all if you dial them in right and they aren't very expensive. I'd recommend them. Hope this helps!