Keurig has two different coffee machines; the original that uses K cup, small light weight plastic cups that carry the coffee into their brewer. Their newer technology uses two different sized VUE cups. It has cup volume of 4 to 18oz, two vacuum levels, but does not have the variety of coffee that is offered in K cup form. Howard the VUE cups are extremely rigid hard No. 5 plastic. I stacked and glued three of the small size and two of the larger cups, even painted one set and placed round rubber pads underneath and on top, the regular ones can slide around.
I believe anything helps, some material better than others. I thought that my exotic wood footers were the best that I have heard on my systems equipment. Every things has footers. The VUE cups sounded as good if not slightly better than what was in place, next month they may not. They are free and I have several hundred of them, saved them for mixing epoxie.
Have a pair of Mr. Speakers Alpha Dog headphones, they have been breaking in for four days now. Great sounding headphones, have not sat down and listened long enough for any opinions, YET!!!