depends on what else your going to use it for. I have the EeePC 1000H and it works great. It was only $300 when I bought it. This little thing rocks, I hooked up wifi in the house and handed the desktop over to the wife and kid. I need nothing else. As for ecmspy and dataloging anything relatively new will work, its not a heavy program to run.
I don't really do any thing except play Command& conquer, order parts, check E mail and XB forum. Those sound great, not familiar with EEEpc, where can I find them?
The EEEpc I have is a "netbook" which are perfect for traveling, but not so good for everyday use. It is VERY tiny, mine only has a 8.9" screen. Here is a link
Lenovo, which is basically IBM make GREAT computer and are very decently priced. I highly recommend Lenovo. Here is a link for a few inexpensive, but well performing Lenovos.