Resmed AirFit F40 vs F30i

I have tried the F30i and it doesn’t seem to work for me because the nose part doesn’t fit and it leaks. I can’t tell by the photos whether there’s a difference in that area with the F40. My nose I guess is on the “dainty” side which I suspect is the problem. Can anyone help?

I wear glasses to read and I keep falling asleep before putting on the F20, which isn’t helping anything. I like the F20 just fine except it doesn’t work with glasses. :(