Hi, Katie Drucker! My friend Omar Shahine (who has great recommendations!) recommended Integrity Gutters - I reached out and spoke with Wayne, the owner. He confirmed that they do service Seattle. Hope that helps.
Yes, they did a great job. Note decide if you want to paint your gutter First otherwise the painters will have to take them all off and paint them and put them back up. We pained our gutter to match our house siding.