I am looking for a handheld wireless mic system that has a range of at least 400' or even a little more. It will be used for sideline reporting and other things but when doing sideline reporting it will be a long distance from the base to the mic. I would like to keep it under the $400 mark as we are a school on a budget. I really like the Audio-Technica System 10 Digital Wireless - Handheld System range but it only has a range of 100' is what they say. Does anyone know of any good deals out there that would work? Thanks.