HANDS DOWN 31 Sonic; most bang/boat for the buck. Pick one up 1-2 seasons used, and all the gremlins will be worked out for you. Only thing you will need support for is Mercury warranty.
Its easy to add a higher windscreen to the Sonic, and keep a clean sleek look.
Second choice, 32 Sunsation. I have no experience with Suns personally, but never heard a bad thing about them on the board or any of my friends with Suns.