After re-reading your post I'm going to assume your looking for a handheld unit, there are a lot of good ones out there and a few bad ones, I don't think you can go wrong with any of the Garmin handheld units, the Vista mentioned above is a great unit, probably be my second choice, first would be the Map76, alot of the same features as the Vista with a couple features the Vista doesn't offer, 1) it floats 2) comes with built in tide table/celestial chart 3) bigger screen then the E-Trex line which is nice when your trying to read the thing at 20+ mph in choppy water.
Both the E-Trex and 76 units are WAAS capable but it does not yet work in Wash. should be available within a couple years.