I'd go with one of the 11.x or 12.x inch screens if doing it all over again. I've got a little Eee PC 900, and it's just too small for my tastes (I tend to "fat finger" the keys since they're too close together for fast typing). Battery life isn't the best either.
Also, some image viewers and editors won't install unless they see a screen resolution of at least 768 pixels on the shorter side (and the resolution of my litttle Eee PC is only 1024x600 pixels, which is typical for the 10" and smaller netbooks). Some web pages are harder to view with a 1024x600 pixel display, too.
So, if I were buying a new netbook today, I'd probably go with something like the new Dell M101z (it's got a screen resolution of 1366x768 pixels with an 11.6" LED Backlit screen, getting the config with the dual core Neo if budget permitted (the less expensive config options are using a single core Neo CPU).
It looks like one that's relatively loaded with the dual core CPU and 4GB of memory is running around $549 now, and it's built in graphics chipset (Radeon HD 4200) supports HD Video decoding. They have lower priced configs with a single core CPU and less memory.
http://www.dell.com/us/en/home/notebooks/inspiron-m101z-amd-1121/pd.aspx?refid=inspiron-m101z-amd-1121&s=dhs&cs=19
It seems to be getting pretty decent reviews, especially in areas like it's screen, keyboard, build quality, speakers sound quality, etc. Just google for M101z review and you'll find some:
http://www.google.com/#hl=en&q=m101z+review
You may also want to look at the listings available at Dell Outlet. Just go to
http://www.dell.com/outlet
The listings change relatively often. So, just keep checking back periodically if you don't find anything you like.
If you google around, you can find coupon codes for more off at Dell Outlet Home right now, too (15 to 20%).
That way (buying refurbished), you get a discounted price anyway, and if you find coupon codes for even more off (and I'm aware of some they have right now for Dell Outlet Home Laptops and Desktops), the savings can be nice versus a new machine (and the refurbs have the same warranty).
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JimC
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http://www.pbase.com/jcockfield