There are a few establishments that carry the dry herbs I receive from my provider. Don't know about their other products, but Humanity Collective, Northwest Patient Resource Center, and Greenworks Co-Op all carry TJ's Organic Gardens flowers. They win awards annually. Keep an eye out for TKO Reserve as well for the dry herbs and GOAT Organics. For concentrates, I recently have tried T-Rex Concentrates who are at MMJ Universe in Black Diamond for the Farmers Markets on Saturday, but thats over close to the Covington/Enumclaw area. Their donation rates are amazing for the quality when you snag 4 grams. Farmer Joe Parker has some good concentrates, as does Knotty, Medicinoils, & TJ's. Dama isn't anything special from my experiences to be honest. I can't comment on the other two, but have heard good things about Refine Seattle.
For the most part, I'm almost always good on dry herbs unless I want to add 4 strains at low quantity to give me more of a selection to choose from. Concentrates, I'll be going through T-Rex & Medicinoils going forward. My buddy is a partner with Medicinoils, so quality & donate rates are always outstanding. T-Rex will be used as a headstash for myself with concentrates that I treat myself to whereas Medicinoils will be my primary that I consume the most of.
Figured this information would be of use to anyone looking around the area. I've covered both recreational & medical to the best of my abilities for that area. Patients down south in WA near Vancouver can also get TJ's Organic Gardens products through their delivery service. Their delivery driver Gad is one of the coolest dudes I've ever met and will take care of every single patient he visits. Samples are common to find what works the best and all their flowers are amazing. The Chocolate Kush is my primary smoke. White Label, Dark Star, & Purple Kush are outstanding at night. Blue Dream, Grapefruit, Girl Scout Cookies, Matanuska Thunder Fuck, and Durban Poison are all great sativas. I think every single one of those strains has won awards for TJ's as well with the exceptions of Dark Star & Grapefruit. Tacoma has Left Coast Cannabis and Lacey (near Olympia) has The Healthy Element, so all up/down the I-5 corridor have places where you can find their products.
Edit: Here's my flickr account where I've been posting pictures. I tried to put information on every picture with at least strain and cultivator/processor. If you have anymore questions, message me as I really don't want to flood this thread if it's not wanted by OP.
https://www.flickr.com/photos/pieromania/