Used a few times over the years. Lately it's been better. Visits to pick up supplies has generally had good customer service. When we were in a condo some of the service work on our jacuzzi was unprofessional and I did not want to ever use them again.\r
Since being in a house we've had to go in to the store several times for supplies and that has been pleasant. So I can say yes, use the store (also one near the West Seattle Freeway), but careful with their on-site service.