I have both the Marauder and the Whisper in 117 and the Marauder is much, much quieter. It will also shoot circles around the Whisper. I just shot a beer bottle cap off a fence post from 130 feet with the Marauder. The cap was lying flat and only presented a 1/4" silhouette. I was using a sandbag rest, and it was probably a lucky shot, but I never could have made the shot with the Whisper.
Don