high or low pressure regulators?

I'm sure this has been discussed here but I couldn't find it. What are you guys using for burners on your all grain rig? Is it high pressure or low pressure? From what I've been reading it sounds like a high pressure burner will get you to a boil faster but will use more propane than a low pressure regulator. Maybe a high pressure burner for the brew pot & low pressure for the other 2? Brew pot burner...
http://www.amazon.com/gp/product/B0009JXYSW/?tag=skimlinks_replacement-20
maybe this for the mash tun & hot liquer tank?
http://www.amazon.com/dp/B0009JXYT6/?tag=skimlinks_replacement-20

Thanks!