SH-140L by Camp-Chef. 60,000 total BTU/hr, commercial quality cast burner. 24″ cooking height.
Prior to moving to a Blichmann TopTier I owned and used this exact burner. I really liked it. One big advantage, that this burner has is that the included leg extensions make it tall enough to drain directly into most fermenters.
Update: Since this post was published the price, availability or promotion has changed. Check the product page for current description, price and availability. Also: Today’s Deals on Amazon
More: Recent Amazon Finds