Funny enough, the el cheapo Averatecs are garnering pretty high ratings. Never heard of a winbook. Acer makes the AOpen cards and parts that I love so dearly, I figure their laptops may have the same veracity.
That said, I bought a used Compaq Armada M300-6600 off ebay since it worked with the same dock and accessories/battery that my old Presario 305 used. It's a family of machines, they all use the same bits and pieces, running the gamut from ancient celeron 333mhz 'tops up to PIII-700s and higher with the M500s. the one I bought was incomplete but was still a PIII-600 with 128M ram and a 6G hard drive for $185 shipped. To "Complete" it with more ebay parts would be about $150.