I am looking at both close to same price $600-$650 Lowrance has USA maps with chirp transducer. I was looking at Garmin 840xs but need to spend more. The Garmin PLus 73cv with lake vu and trans, give chirp in traditional sonar and clear view. I am not sure really what clear vu is. I am novice at with chirp, and the down view, chirp with clear vu, don't want to get into total scan. I hope to hear from Garmin owners and HDS 7 Gen 3 owners