Swap meet burners

I just went to my local swap meet and saw a few choices for a propane burner for my keggle. The question I have is: low pressure or high pressure??? These burners are low cost and, more than likely, low quality. I can get a low pressure burner with stand for $30 this feels like a steal!! Is it? And if it is, low or high??

 

They don't really have much to say about them except that there is a low pressure model and a high pressure model. I asked them the same 7 gallon question and they just shrugged. The only info I could find on the interwebz was somebody was using the hi-press model for large batches of carnitas!!
I don't want to buy the lo-press if it's not powerful enough and I don't want to get the hi-press if it's going to be overkill wort scorcher!! I've not brewed a single batch yet, so consider me EXTREMELY green, including that I don't know the real difference between low and hi propane pressure.
Is your burner a hi or low???

 

You need to know the BTU rating. High pressure pushes more btus through smaller holes/pipes. It will tend to be noisier and less efficient. Low pressure will be quieter and more efficient.

Also look at the definition of low pressure v high. If Low pressure is house gas pressure then it should be about .5 psi, high would be 10+. In this case you need to figure out how many btus the low pressure burner can produce.

They might be selling a lower high pressure model that is 10psi and a higher high pressure that is 30 psi. If this is the case most likely the low pressure is fine.

Look at the sticker on the regulator mine is clearly stamped 10psi

 

Thanks for the replies and advice! I think I'm gonna with the low pressure for money reasons and the fact that I'm a cooking nut! If it wont boil wort it will at least make some kick ass BBQ!!! The low and hi will both interchange on the stand. I'll update with my findings next week. Wish me luck!!