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!"
For half the price of the official first party vga cable you can get the Pelican brand Livewire 360 vga cable. The trade off is you don't get the optical audio output, but for some people that's not exactly a deal breaker anyway. I initially got mine through Gamecrazy, but it can be found at Amazon.com for a mere $20. I think that's a way better deal for anyone that's not going to use the optical output anyway, and to me it beats hacking your composite cable to do the same thing.