I researched DIY kits pretty heavily for a week now. Just ordered an mtm kit from Danny today. My first. THANKS Danny for the prompt replies! I can't wait! Anyway, just fyi, the peel and stick floor tiles may come loose. They need to be applied with LOTS of pressure to stay. Hard once the cabinet is assembled. They do make thicker vinyl tiles these days, which are easily scored and cut. Around 3/8 thick. Recommend applying with glue/construction adhesive/etc. Avoid peel and stick if possible. (that, is in my arena of experience) As I like things SOLID, I'm considering cabinets that have a layer of cement board inside. Cement board (like for ceramic tile installation) is available in 1/4 to 1/2 thicknesses. PL400 subfloor adhesive is AWESOME stuff. Bonds to almost anything. Hardens HARD. Like concrete. And will bond cement board, or almost anything, to wood. I don't even have a plan for the cabinets yet, but I think either this set, or my next more "extreme effort" set, will be wood over cement board. ( or, from a construction standpoint, cabinets constructed with the ID's 1/2 inch bigger than spec, and cement board cut and glued to the interior) 1/2 or 3/4 inch wood solidly bonded to 1/2 inch cement board will make for solid! As for damping, I'm no expert. But my gut tells me that "heavy, somewhat sluggish but compliant" is what's needed.