Racks and stands need same thing.Heavy metal and feet.Specifically iron.Call Bob Warzalla at Sound Anchors and a set of Gingko or other good isolating feet are best option after wall mount.I sold high end gear from 1996 -2001 and though my boss sold what I recommended (Salamander Synergy) it was for looks and flexibility of adjustable shelves.But if a friend bought some B&W's or other good speakers and had wood floors I got them Sound Anchors ever for floor standing speakers (you'd be amazed at what the heavy bases did to help floor standers with and in or a few inches of height as long as they didn't make tweeters to high even on heavy trussed solid oak floors).I know Bob made a better sounding stand for monitors like the B&W 805 that he thought should be mass loaded as much as possible near that speaker as opposed to the prettier more expensive B&W stands.Next to the speaker stands a heavy rack was best way to go for all components and if a good TT like your concerned good feet (or if have money aan active Vibraplane originally used to keep electron microscopes still-but it costs).If you find his stuff to pricey (it's worth it) you can try putting a slab or marble underneath another stand which will help and you won't have to worry about isolation points (they should be used wherever possible.I told folks get floor protective cups but isolate points of contact.On the heavy SA stands I use cones between cross braces and shelves) but with a marble slab you didn't need the cups.There are prettier and more expensive brands but you want weight/mass the more the better.Using a heavy stand getting right placement,perhaps clearing out area between speakers,and doing room treatments like putting a rug behind speaker can be way more cost effective than cables or even new components.The VPI stand or Billy Bags are good table stands but Bob's "heavy metal" is best buy along with a Gingko's.
Chazz
Chazz