Tweaks

Jax2 clearly said "not likely" and "soon". Neither of these are absolutes that definitively condemn either product.

Jax2 is entitled to his opinion the same as the 1000 audiogon customers that are cited.

Of course 1000 people could be wrong!
Look how many people voted for XXX (fill in 'favorite, here'!!!)

And, like voting, tweaks without coherent scientific theory are also an 'act of faith'. Look how many supporters politician X has even after getting caught in some amazing scam or in a relationship with a barnyard animal.

"In all fairness to the 'other school of thought', some of the science associated with tweaks is a little .... weak? Solid State Microphonics?"

Microphonic resonance in SS circuits (caused by fluctuating electrostatic forces in silicon chips and PCB traces)is a recognized scientific phenomenon. (Do a search on "Resonister.") I just finished treating all the chipsets and traces in my CDP with an anti-resonance paint that supposedly contains dense iridium. The improvement was astonishing and on par with prior circuit mods and piece parts upgrades.

Leave the room, you components! Yes, all this talk about vibration misses something that should have been obvious to this subject, and that is isolate your components, especially vinyl stuff, to an adjacent room space. That way, all the acoustic energy in the listening room will not impact your components. You will be surprised at the difference.
I know, that is not often possible given PAF and other real world considerations. However, it should be tried on a temporary basis to give you a sense of what that change can do to improve the sound in your listening space. If you like the improvement, consider building an isolation box, especially for the turntable, where it will make the most difference. I have experienced two listening rooms where it was done and it made an unbelievable positive difference. It was easy to hear the difference, box and no box.