Re: input on dampener
That isn't an apples-to-applies comparison. Luxury Liner Pro has closed cell foam bonded to the vinyl, while the SDS MLV is just the vinyl barrier. You also need the SDS closed cell foam, the IH-66 vinyl cement, and the velcro strips to attach it the two layers to your vehicle. I haven't used Luxury Liner Pro but I have used a lot of SDS products. The SDS way doesn't require materials to be glued to your panels, so it's easily removable. Obviously it will require more time to install due to the extra steps required.
Skipping the foam layer is not an option. It serves the purpose of decoupling the vinyl from the vehicle, otherwise it will just transfer vibrations and noise.
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