Everything Pygmy says about the handling of their boats is accurate. The Tern will be more manueverable, the Coho will track stronger. I logged on to the Eddyline site to check out the Raven. Based on their description of the Raven, you might want to take a look at building one of Rob Macks designs, since the Raven is based on an Aleutian hull design.
You haven't said anything about your size. Both the Tern and the Coho are pretty high volume boats. Dave Grimmer at Pygmy was very helpful when I was deciding which boat to build and should be able to help you sort it out. Based on the description and reviews of the Raven, you're a candidate for the Tern, if the responsiveness and playfull qualities of the Raven are what you liked. You can check out the Tern I built at the link I've included here for an idea of the construction process.