Accumulator, silencing hoses, or both?

The noise from our fresh water pump seems to come and go based on how the Pex lines end up shifting after particularly rough road days. I've installed foam pipe insulation and tried to secure water lines away from walls and bulkheads, but things can still be pretty noisy at times. Searching the forum, responses seem to fall on both sides of the fence - some swear that the tank is the way to go while others say the tank is useless and the silencer hose kit is the only answer. Am I off base concluding that, given the noise seems to be vibration-based, the silencer hose kit is the right solution?

Thanks!

Rob