I've stood next to the downspouts in the wind and have seen the vibration first hand ( see video ). So definitely not the new siding ( hardie plank, cement composite claps, expensive-high end stuff, pvc trim..).
Lots of great suggestions. The installer said he was coming back to correct the issue. Not sure if it will be additional straps or resettinging the screws so they're further from the house. I love the clean look of the invisible clips, maybe he can just use more...