Chrome OS Flow. I've tried Flow out on two laptops, Toshiba, an Dell, and a eePC netbook.

The biggest draw back is if you don't have a wired connection you won't be able to start the OS, you'll just get the login screen. After you've successfully booted on a wired network it will run on any wireless network nic.
The Toshiba and my Dell laptop Flow ran like a champ, loaded intensive graphic sites with blazing speed.
The eePC had a 8g SSD (Solid State Drive), man you wanna talk FAST!!!! I MEAN WOW FAST!!! Chrome OS Flow is so blindingly fast on netbook with 1g RAM 8g SSD, that means no moving parts. Sites with tons of flash or large graphics, loaded with no or with almost no wait time. Flash games loaded with no wait at all.

If you love to surf the net and you don't download everything you see then a Netbook with solid state drives Chrome OS Flow is the OS for you. It's way simple because it's just a browser. It has all the links to you favorite social media sites. The actual footprint on the drive is about 1.8g... A dream machine for this OS would be 4g RAM, 64g SSD, and at least 1g Vid RAM. Chrome OS on a tablet PC as a collaboration tool and multi-touch screen would be ideal!!!