I have a white 87 560EX with 531 and 600 sis components. Great riding bike, love the handling and stiffness. I took it out yesterday for a steady speed group ride, I was able to hang with riders on modern carbon, Ti and aluminum bikes. 16 mph over 62 miles, not too shabby for a 23 year old bike. I live in Western Washington also.
Here is mine. This picture is older, but everything is still the same except for the saddle.