Let the hive mind of Engadget get that for you.
"I finally got a new laptop with a lone USB 3.0 port. I'm now looking at getting a USB 3.0 hub with a power adapter so I can use both of my USB 3.0 hard drives at faster speeds. I've read lots of horror stories where some hubs either don't come with power adapters -- and as a consequence the portable drives don't work with them properly -- or they are designed poorly which results in USB 2.0 speeds. Or, the hard drives keep getting disconnected. Do your readers have any suggestions or experience using USB 3.0 hubs? Thanks!"
The Fish Eye and Soft Focus are the newest products. To me these seem to have been dreamed up by the company when trying to work out what they hell they could try to sell to people next.
I have the Composer and all the original optics (plus the add on lenses for wide angle and telephoto), but these newest two seem like they were running low on ideas (okay, if I hadn't just bought the Canon 15mm fisheye, I guess I might think a little differently, but still I think these are pushing the product line too far).