[pothole]

The single argument I have heard in favour of the low temp stat that makes some sense is one you have not mentioned at all.

It relates to speed of reaction and the fact that the stat is place at the inlet side on the engine. IE the stat sits on the engine where the coolant from the rads comes in, rather than where the coolant from the engine leaves for the rads.

In this scenario, you can imagine how it would take quite a time for hot coolant to make it's way round.

I am not sure if this is true (the stat placement), but if it is, it does rather argue for a lower temp and faster opening stat.