The Cinegears Ghost Eye systems are the best price-to-performance on the market now, not to mention the best overall performance! The ~2000$ kit now does over 300 meters of 10-bit, no latency broadcast to up to 8 receivers per transmitter. The 400M kit now does over 1000 meters out of the box, and over 1 mile with extended-range antennas!
1000m< range test:
Holiday Sale!: https://pbs.twimg.com/media/CyI5TFvUQAAMHk8.jpg:small