We used Admiral Escrow on our last purchase and found them to be pretty efficient and generally had no issues (which I would have to say is a major plus!).
I only chose them due to their physical location (on California in W. Seattle/ Nearby the Admiral Safeway) but it worked out quite well.
We went in and in one day we filled out all of the paperwork and other than that it was relatively low impact.
We had gone through this process twice previously and had some bugs in the process so to not have any this time leads me to believe they are a pretty good outfit.