The ones mentioned in the original post both look nice. I went cheap and bought some Boos Block Hard Rock maple cutting boards for under my monoblocks and my Audio Research integrated. I bought them more for practical purposes than for sound. I didn’t want the monoblocks sitting on the carpeted floor and the AR piece hung out over the front and back of the shelf I had it on, so the Boos Block gave it a more solid place to rest and kept the weight on the feet and the air flowing under it. With a name like Hard Rock maple, they must be perfect for music, right?