Flexifit Full Face 431

I have tried one of the Flexifit 431's and also a Resmed Mirage Full Face Masks.

I find that the Flexifit is very difficult to exhale thru even at low pressures - although it is very comfortable and doesn't leak.

The problem I have with the Resmed is it leaks at the sides when the pressure is high - I am using a Spirit and it runs at 13cm some of the time!

My AHI is 47 and I am just getting started, although I am getting 7-9 hours use each night.