iMovie file sharing

What are you guys using to share your iMovie projects? I frequently colab with musicians to do scores to my movies so we need to be able to send massive amounts of data back and forth. I'm thinking Gobbler looks pretty good as there's no size limit on file sharing. The backup and organizational tools seem easy to use too. Curious to know what else is out there?

There are so many out there, you just need to shop around. I currently use iDisk, but that will be going away soon, so I'm in the market for a new service.