I go by the outage reports published by AWS. I haven't done an exhaustive analysis but there is a trend to support the common knowledge. I spend most of my time

I go by the outage reports published by AWS. I haven't done an exhaustive analysis but there is a trend to support the common knowledge. I spend most of my time in us-west-1 and us-west-2 and very few if any outages over the past 3 years.