WiFi is old technology for video link, used on P3S. Versus lightbridge, WiFi gives you higher video latency, less distance, higher reconnect times and more frustration. You will eventually spend $200 to $300 for directional antennas and amplifiers on a P3S to equal a stock P3A. All other competitors use WiFi because it's cheap, however it wasn't designed for wireless video connections, unlike lightbridge. As time goes on I think you will lose your shirt with P3S because nobody will want them, using the same old technology everyone else uses. Plan to keep it because you may not be able to sell it. The P3A is the bargain to scoop up, nothing can touch it for value, but you'll want to buy the 100 watt charger too.