I commute in PDX and I have the Garneau one, which I picked up at Performance on sale. It works as advertised and fits my Giro Atmos perfectly. It might look breathable, it's really not so much, as I got quite hot in it on the warmer rainy days here. My decision though was based entirely on which one would best fit my helmet as I just brought my helmet with me to check out all the options.

I just got a Bern Macon for skiing though, and decided on getting the "summer kit", so I will end up using that for my winter commuting now instead.