Thank you for the link DeepBreathing.Very helpful as always.
I already have a used Quattro mask,but the cushion is old and the headgear looks to be be marginal.There are a couple of places to get gear in Manila,but that is quite inconvenient.Buying a wrong mask would be a lot cheaper than a trip to Manila for sure.
I find the sizing templates to be helpful but not entirely accurate for me. When I tried the Simplus mask, I got the sizing template and it indicated that I am right on a medium. After using the mask, I thought that I needed a small. Got the small and I was right for several reasons that I don't think are considered by the templates and are probably beyond the capability of a "simple" template.