SFMW definately. Think about it: SCBB has a great nostalgic atmosphere and a great old wooden coaster...but that's it. The Hurricane is fun, and their flat rides are ok, but that's about it. The miniature golf is fun, but it's just like any other mini golf you've seen, except it's inside. Now SFMW on the other hand, has the best steel coaster in California imo in Medusa. They have an awesome wooden coaster in Roar, which is a little different from SFA's version. Not much different, but different. Then there will be V2, another world class coaster, along with their hang-n-bang Kong and the basic Boomerang. Not to mention the awesome flat rides they've got. Then there are the awesome shows they have. Do SFMW instead of SCBB. You will not regret it. Peace. :)
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Medusa at Marine World: the best coaster in the west!