The 901 has the Intel Atom chip which, as stever mentioned, increases battery life by at least a couple of hours.
I'm on the cheapest bad boy out there -- 900 16G, at only $350 -- so I can't find a reason not to love it. The MSI wind looks awesome, but the price point is a bit higher.
I also love the Eee community -- seems like there's always someone else out there who has had similiar troubles as me. That said, the documentation is pretty sprawled around the web, so it's not always inherently clear.