Although the dvc325's software bundle is unexceptional, its manual is above average. This helps a bit in low light, but only slightly. The Logitech Quick Cam Pro from Logitech is pricey but comes with more features than similarly priced competitors have. For example, it bundles in a Labtec headset with a boom mike, which can be a useful addition for videoconferencing. You can easily adjust the focus on the QuickCam Pro, and the images have good color.
Documentation is minimal but adequate.
The Philips Vesta Pro PCVC680K may not have a memorable name, but it is the only model we tested with a built-in microphone. Its base, which looks like a pair of clown feet, doesn't afford easy positioning. But the camera does have a threaded tripod hole and a handy desktop tripod for better control. The package includes a diverse bundle of programs, but the printed manuals are weak. Image quality is generally satisfactory, though pictures have a slightly brown tint.