My first burner was a turkey fryer I bought from a guy on Craigslist, who was upgrading. I would later find out that he must have spilled wort on the regulator, because it was sticking. I got it working and finished my first batch, the whole time noticing how loud this thing was and how it would leave black soot on the bottom and sides of my kettle. I would later return it to him, commenting on how he failed to mention the regulator issue.
So, I went online and began comparing different burners, wanting to get the best there was for the money (all the time knowing what the best choice was, but was looking for something just as good for less money). What I would soon realize, is that I should probably go with my friend's saying, 'buy once, cry once.'
I cried a little bit when I checked out online, but was quickly consoled once the Blichman arrived. It is solid, well built and creates massive amounts of heat with minimal amounts of propane. Like the author said, I can easily brew five times (5-gallon brews) before needing to get my tank filled. It is quiet and I have recently upgraded my kettle to a 15 gallon, and it can get a rolling boil in that with little to no effort.
If you're on the fence, do what I did. Buy once, cry once, and spend your time focusing on the important stuff.