Rank order is based on our tests of speed, battery life, keyboard, plus weight, features and specifications.
Speed High-speed models ran applications as quickly as a 1.6GHz Celeron-based laptop; Low-speed ones ran noticeably slower.
Keyboard includes its size and layout, plus our assessment of the trackpad.
Storage is either a hard drive (HD) or solid-state drive (SSD).
Size can vary in each dimension by an inch or so, but even the largest model is far smaller than a standard laptop.
All models use the Intel Atom 1.6GHz processor and include Windows XP installed, 2 or 3 USB ports, a smaller keyboard than a standard laptop, Wi-Fi, a slot for both Secure Digital (SD) and Multimedia (MMC) memory cards, webcam, microphone, headphone jack, but no CD or DVD drive. Most offer a choice of colors; some offer a higher- or lower-capacity battery, or more built-in storage