A) Handles vibrations effectively and
B) Looks good and
C) Isn’t stupidly expensive
A) Handles vibrations effectively:
Vibration getting in:
I think you have to identify what your problem is. I've had everything from bespoke systems, well reviewed steel frames, aluminum space frames, vibration controlled platforms and the rest. I now use nothing 'hifi' to support my kit as I don't have any kit that has problems with vibration getting in, or vibration getting out. A simple test is to put everything except your speakers in a separate room, and crank things up loud. It should sound fine. If you then return the system into the sound field and it sounds worse you have kit that was not designed to cope in a noisy environment. My first move would be to sell that kit and buy something designed by someone competent. My Radford STA 25 sits three inches behind my RHS speaker, my speaker has two 10" woofers and 400w of amplification. No matter how loud you go the sound does not alter. Hammering on the case of the STA 25 produces no sound through the speakers at any volume. If Arthur Radford could get that right, using valves, 50 years ago, a solid state designer should be able to get it right today.
Turntables - different problem. Though mine sits on a record rack made from Ikea units. It sounds just as good as it ever has on any of my designer tables (I have three in the loft at the last count) - but it was designed before anyone invented turntable tables. I the old days some CD players were vibration sensitive, but most weren't - even the one I had that claimed it was.
Vibration getting out and affecting something else:
Same answer really, but you need to identify the problem component and eliminate it from the system.
B) Looks good:
Indeed, if it's ugly and in your sight line, it will annoy. My system is mainly behind me, though I can see my STA25 on it's B&M table behind the RHS speaker, and the two huge Martin Logans that no-one could miss. Buy on looks...
C) Isn’t stupidly expensive
Don't buy hifi furniture, it's all essentially small production bespoke (with huge margins) - and often beautifully made, but you are paying for the privilege, if I was going to have some bespoke furniture made I'd get a new dining table.
Of course I may be deaf.