Overall I'm underwhelmed by Chromium OS; the user interface is poor, confused and inconsistent, and as a platform I am concerned about the unreliability of the cloud and the lack of ubiquitous availability of fast internet access. The reliance on the browser as the best UI mechanism for every computing activity simply doesn't work, the fact is that over the 8 weeks or so that I've been using this OS I found myself more often than not picking up my iPhone instead of the netbook to check email, update Twitter etc. Like a number of products from Google Chromium OS just feels very unfinished (yes, I know it IS unfinished at the moment) and I really doubt if it will appeal to many, your mileage obviously may vary :-)
I've got a set of drivers for the Broadcom wifi card in the Dell Mini 10v that should work under Moblin, so I'll be rebuilding the netbook to run that OS and will see how it compares to Chromium OS, however with the announcement of the iPad I think the bar has been raised so high that all the current netbook manufacturers are going to have to really have a long hard think about what people actually want to do with them and how then can deliver that in an attractive, usable and safe package.
More on Moblin soon.