The keyboard on the Dell is laid out slightly better than the Eeepc (IMO), and it runs Windows 7 fast enough for the majority of what I do. I went with the 6 cell battery, so start up time isn't an issue (just put it to sleep).
My only issues with it are that the screen resolution is too small to do any real coding on (but big enough in a pinch) and flash video can get a little choppy.
No other issues, and I use it constantly, either by itself, or as a secondary machine when working on my desktop.