MIne wasnt bad at all, but I used the Poison Spider mounts, maybe other mounts were different. Either way, on a box with an engine, you cant expect much. My biggest concern about the mounts for these trucks is the effect on the "triple doors seals" where the mounts sit underneath and if they would create more noise through the seals.
I expect to use the light all the time when driving in northern regions and logging roads for Moose and Elk etc...so I dont mind paying for the really good stuff like Rigid or BD. That being said, it's my company truck so it's also a tax deduction. ;)