Glass or MDF Shelves

Thanks, so I’m thinking about a VTI rack. I thought the MDF might have better acoustic dampening properties than the frosted glass but it might be negligible . The glass does look better to me but maybe I put my Acoustic Signature on top of butcher block or something else

Thanks everyone @miller and @erik 
great thoughts. Yes for more a little more money I’m really liking the butcher block to have the mass and style, Thanks very much gents!!