I have a Core Audio plyKraft 3L rack that holds my TT (Michell GyroDec/SME IV, Clearaudio Maestro V2 Ebony). Works perfectly for me, the turntable is acoustically completely isolated. You can jump up and down (some call it dancing) right next to the rack and everything is rock solid. Don't try this at home; you can even kick the rack and the stylus does not skip! See my previous post on this system and the article in the April edition of HiFi News about this system.
https://forum.audiogon.com/discussions/second-system-that-sounds-and-looks-spectacular-i-am-there
https://forum.audiogon.com/discussions/second-system-that-sounds-and-looks-spectacular-i-am-there