Its true, netbooks have gotten much better since I bought mine. Dual core and Ion make for a capable little pc - Borderlands at 20 fps on low settings is pretty impressive.
I suggest this, go to a big box store: Bestbuy, Frys, Target, etc, and play with one. Find the size you want then watch the tech deal sites: Newegg, Tiger Direct, Slickdeals, etc, for a sale on one. The trick here is that all of them have one of a handful of motherboards and monitors, so no matter what brand you get, itll be the similar. The difference between most EEEs and Winds is color of case. My netbook is an Asus EEE while my nettop is a MSI Wind.
I did not try Half Life through wine: Juggling stuff on a 4 gig drive is rough. Ill give it a go when I get a SDHC card.
My recommendation is figure out what version you think will work best for you, and then buy online. I got mine for $150ish on sale at Mwave (refurbished), my old man who bought the harddrive version of mine at Bestbuy for $400 new...
Case in point, you can get a 10 inch HP mini for $300 right now on Slickdeals:
http://slickdeals.net/forums/showthread ... &t=1962754