UHF is the future of falconry telemetry. I heard Marshall has stopped investing time and money into improving their VHF and is going to concentrate on UHF and GPS. So why by a system that is outdated. Only drawback to UHF is price and battery life but with that comes a more powerful signal and shorter antennas and a small Yagi on your receiver. You're going to get people from both sides of the fence but if it was me I'd go with a new UHF 100 or find a used Marshall VHF 800 and use your existing Transmitters.