Amplified indoor antennas that receive high ratings from Tom's Guide are the Terk Trinity, the RCA Ultra-Thin, the Mohu Leaf 50 and the Winegard Flatwave. Tom's Guide judges quality on factors such as the total number of channels, how many of those are major channels and audiovisual quality.
Each model on Tom's Guide has a more in-depth review explaining its features, pros and cons. Testing indicates that reception quality varies according to location, even with high-quality antennas. Amplified antennas usually promise quality reception within a 50-mile radius of the broadcasting stations, but people who live closer to local stations may not need amplified reception.