rayong

Question about the rinnai inner flame burner. I see the flame is directed inwards and my concern is whether it creates a concentrated hot spot in the middle of a large pan. From literature I've read it seems like the inner burner spreads the heat out but I can't see how it does it better than a 3 ring burner with concentric flames that spread them over the bottom of a pot. Can someone with the inner burner hobs comment about whether there is a hot spot in the middle of a large flat bottomed frying pan? Also it seems the heat is very intense. Is there a problem with flame control if I want a small flame for simmering or gentle cooking.