Logitech Cordless Desktop LX500 and LX700 Showdown

msftmichael writes "CoolTechZone reviews Logitech's latest LX500 and LX700 Cordless Desktop Duo products. The author discusses problems with software, compares and contrasts the two products, and talks about wireless technology in a very in-depth review. Here's a quote: "Both of the products we are reviewing use RF (Radio Frequency) receivers to communicate between the mouse and your computer. It operates on the 27 MHz frequency, which is good for short range communication through less than 2 physical barriers. At this relatively low frequency, interference can occur due to proximity to other electronic devices, which is why Logitech recommends that you keep the receiver 8 inches (20 cm) away from your monitor or computer. They also recommend against putting it on a metal surface, and for good reason. While on top of our steel computer case, we could not get the keyboard or mouse to communicate with the receiver."