Actually I find the Opium 39 a good looking boat.
About the boat and its speed potential I think you would like to read this boat test:
The Translation is really bad. This is the translation of a test by the Doitch magazine "Yacht". "Yacht" is in my opinion probably the best sailing boat magazine (and I know a lot of them) and they don't like particularly French boats. They normally like X-Yacht, Arcona, Luffe, Finngulf, Swan and the like. I believe that I never heard them say so well about a French boat.
Look at the wind speed and the boat speed. I have sailed the same boat (the one in the photo) with about the same wind and I can tell you that those numbers are for real. The boat sails not far away from wind speed.