If you want absolutely zero drone for all occasions, then get the resonated version of this kit. It's honestly about 50/50 for customers that get either the standard kit or the resonated kit. The resonated system does end up quieting the whole system down, and you won't really have a noticeable turbo sound. If you are towing, I would stay away from the Borla kits, given that they're rear exit only. The Corsa kits are decent and they're fairly tame, but they do keep the factory resonator. Honestly, I think Solo is one of the best options for the EcoBoost trucks, but you can either have no drone or some turbo noise, not both. Drone is pretty minimal on the non-resonated kit. You do notice that you have something aftermarket going on, but it's not overbearing.