S3 Pros * Thin and light * Less expensive than competition * Good performance Cons * Very short battery life * Cheap plastic chassis * Slow hard drive * Stiff keyboard * Limited viewing angles * Poor audio
UX31 Pros * Slim, sexy, and sturdy aluminum design * Fast wake from sleep * Strong performance * Excellent audio Cons * Erratic touchpad * Keyboard not backlit
U300s Pros * Attractive metal design * Good webcam * Boots fast * Runs cool Cons * Relatively low resolution * Limited viewing angles * No SD card slot * Keyboard not backlit
Z830 Pros * Long battery life * Very light weight * Plenty of full-size ports * Accurate touchpad * Backlit keyboard Cons * Slow write speeds on SSD * Stiff keyboard * Screen a bit washed out * Wake from sleep not always fast