I don't believe half of this, i'm with macmac.
Sort of.
A high flow means you can work faster. So we disagree there.
What we (as in hot users) mean by min flow is that required to make it flame up.And the settings for this are often safety related. The figures quoted are highly improbable, and would lead to the flame staying on when the tap is shut but the pump still going,this will lead to boiling inside the system, and a probable burst.
It's far more likely that peter has got this wrong, or is egging it a bit.Other than that it looks a good buy and will do what most of you want.