Whoo hoo, Washington people! ^_^
I hate to say it, since Sakura-con is my home con and all, but I just like the smaller crowd, so in my opinion Kumori-con rocks the socks off Sakura-con. I'd say its great for meet-ups and new friends for a couple reasons. 1. Its smaller - in 04 by the end of it, I felt like I knew a good percentage of the attendees, 2. From what I've seen, Portland is a safer/friendlier place than Seattle by a longshot.
KC 04 was my first con, and I met people there I still talk to. Maybe this will be your chance to expand yourself a bit?
Anyways, find me and say hi. I'll either be dressed like a biker/rock star (Haruko), a phantom theif (Dark), or a tennis player (Atobe). ^_^