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!"
I picked up a bog standard P off eBay for peanuts. Great little machine, *truly* ultra portable, and runs fine assuming you run either XP or Win7 on it and use it purely for browsing and SD video. It evens runs 720p video well if you follow a few guides off t'internet. I'd never have bought it at full price though, ouch!