Different sizing on headgear N30i standard/small

I have the standard size headgear on my N30i/P30i and find it a bit large and was wondering what the difference in size there is with the small. I have used Pugsys trick of using Padacheeks wraps to make it a bit smaller, its okay but wonder if the small size would be better. ???????????? Does anyone have both standard and small that can do a measurement for me and put my inquisitive mind to rest.
I don't want to have to pay for another headgear if the small would ne TOO small .

Cheers
Nan

A couple of us here, that normally would use the standard size in about everything, found the standard size headgear in the N30i and P30i to be a bit loose feeling and not sealing as well as it should.
Both of us bought the small headgear and replaced the standard. Completely different results. Better sealing due to the angle it holds the pillows and cushion! Doesn't fell as loose on your head.

Hard to measure or tell you exactly what would work best for you. But I suspect you already know that the smaller size is what might be best....