Neither. Get the high pressure banjo that's 210K btu and 11" in diameter (BG14).
Unless you're using it for a recirculating mash... then get the low pressure. For everything else bigger is better.
Between those two, the high pressure one unless it's recirculating mash. The diffusion burners (the high pressure one you listed) concentrate heat in a spot at the center, but it's fine for kettle or water and great for 5 gal brews.