Thanks for the info on the Outdoor Research mask. I had been considering it and the positive review pushed me to give it a try. I'll let you know what I think once it's here.
That said, I have two Railcar masks and both work well but the elastic of these does get stretched out. I've been wearing them a bunch, so I really wouldn't say its a quality issue, simply the reality of small elastic bands. Using a comfort band to pull them tight along the back of my head seems to do the trick in keeping them useful.